According to a 2017 Gallup survey, the percentage of individuals in the United States who are invested in the stock market by age is as shown in the following table.†
Age Range Percent of Individuals
Invested in Stock Market
18 to 29 31
30 to 49 62
50 to 64 62
65+ 54
If 2,000 individuals 18- to 29-years-old are randomly sampled, what is the expected number of 18- to 29-year-olds who invest in the stock market in this sample? What is the standard deviation of the number of 18- to 29-year-olds who invest in the stock market? (Round your answers to two decimal places.)
E(x)=
=

Answers

Answer 1

Answer: 75 people

Step-by-step explanation:

1).

we have percentage of people who invested in 18-29 year category

=31%

we need

n=40 people

this is

30% of x =40

or

0.3x=40

x=40/0.3 =133.33 or 134 people

2).

in 65+ category

percentage =54%

we need

n=40

this is

54% of x =40

or

0.54x=40

or

x=40/0.54 =70.07 or 75 people


Related Questions

Can someone help me

Answers

Answer:

1) 33.333...%

2) 33.333...%

Step-by-step explanation:

4 students out of 12 are wearing all color.

4 students out of 12 are wearing blue shoes.

A bus company operates services to and from the East, North,South and West regions of the country. A recent report from the Operations Manager contains the following summary of their operations. "The total number of passenger journeys made on our services was 430,000. Of these, 124,000 were to and from the North, 61,000 to and from the South, and 80,000 to and from the East. Passengers used bus passes to pay for 158,000 of the total number of journeys: 43,000 on northern services, 51,000 on western services, and 35,000 on eastern services. Passengers who did not use a bus pass paid for their journeys in cash", Construct a two-way tabulation with rows for the country regions and columns for the method of payment. Work out the figures that are not quoted in the summary by using the information provided.

Answers

To find the number going to and from West is 165,000.

The number of bus passes from Southern services is 29,000.

The two-way tabulation

East------------------- 80,000

North------------------- 124,000

South------------------- 61,000

West-------------------- 165,000

Total--------------------------- 430,000

To find the number going to and from West:

80,000 + 124,000 + 61,000 + x = 430,000

265,000 + x = 430,000

x = 430,000 - 265,000

x= 165,000.

Table for the method of paymentBus Passes  

       

Northern services-------------------- 43,000

Western services-------------------- 51,000

Eastern services---------------------- 35, 000

Southern services---------------------- 29,000

Total----------------------------------------------158,000

Let x be the unknown variable,

43,000 + 51,000 + 35,000 + x = 158,000

129,000 + x = 158,000

x= 158,000 - 129, 000

x= 29,0000

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Which set of rectangular coordinates describes the same location as the
polar coordinates (3-√2.37)?
4

Answers

The rectangular coordinates will be (2.999, -0.1239)

What are different Coordinate System ?

The Cartesian Coordinate system is not sufficient to locate points in a plane , therefore some other systems like polar coordinates , spherical coordinates , cylindrical coordinate systems are used.

Polar coordinates are given in the question and we need to determine rectangular coordinates for the same.

The equations used to convert from polar coordinates to rectangular coordinates.

x=rcosθ

y=rsinθ

z=z

For the polar coordinates

(3-√2.37)

r = 3

[tex]\rm \theta \\[/tex] = -√2.37

x = 3cos (-√2.37)

x = 3 *0.999

x =2.999

y = 3 sin.(-√2.37)

y = 3*(-0.0413)

y = -0.1239

Therefore the rectangular coordinates will be (2.999, -0.1239)

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Ivan bought a $1000 bond with a 4.5% coupon that matures in 30 years. What
are Ivan's annual earnings for this bond?
A. $45.00
B. $25.00
C. $4.50
D. $22.50

Answers

Ivan's annual earnings for this bond is $45.00

What is a bond?

A bond is a pledge, made by a borrower to pay a loan taken back to the lender with an interest.

Ivan's annual interest earning would be :

= $1,000 x 4.5 %

= $45 per year

Hence, Ivan's annual earnings for this bond is $45.00

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2. Using the discriminant, determine the number of real roots of the equation x² - 4x + 4 = 0. Do not solve the equation.​

Answers

Answer: 1 Real Root

Step by Step Explanation:
The discriminant uses the formula b^2-4ac. (^ means an exponent, b squared up above)
a=1, b =4, c=4 sub in those values into the formula.
(4)^2-4(1)(4) = 0
Since the answer is 0, the equation will have 1 real root.

One positive number is 5 times another number. The difference between the two numbers is 1432, find the
numbers.

Answers

Answer:

358 , 1790

Step-by-step explanation:

Describe What Anime Is
(In 2 or 3 sentences)
Pls don’t copy and paste from G00gI3

Answers

Answer:

Anime is animation from japan

please help me Im almost done​

Answers

Answer:

[tex]\mathsf {x = 76}[/tex]

Step-by-step explanation:

The given pair of angles lie on a line, hence they are classified as linear angles. They possess the property by which their sum is equal to 180°.

[tex]\textsf {Solving :}[/tex]

[tex]\implies \mathsf {x + 17 + 87 = 180}[/tex]

[tex]\implies \mathsf {x + 104 = 180}[/tex]

[tex]\implies \mathsf {x = 180 - 104}[/tex]

[tex]\implies \mathsf {x = 76}[/tex]

Which of the following statements must be true about parallelogram ABCD?

Answers

D because its true answer :)

Based on the figure, which statement provides enough information to conclude that line ris
perpendicular to line p?
O m/2 = 90°
O m26 = 90°
O m/1+ m26 = 90°
O m/3 + m24 = 90°

Answers

Answer:

m<6 = 90°

Step-by-step explanation:

If lines are perpendicular, the angles form by their intersection measure 90°.

Answer: m<6 = 90°

Based on the figure, correct statement provides enough information to conclude that line r is perpendicular to line p is,

⇒ m ∠6 = 90 degree

We have to given that,

Three lines r, n and p are shown in figure.

Now, We know that,

If a line is perpendicular to another line then it make a right angle in between them.

Hence, By given figure, correct statement provides enough information to conclude that line r is perpendicular to line p is,

⇒ m ∠6 = 90 degree

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19. In June, Cory begins to save money for a video game and a TV he wants to buy in Decembe
He starts with $24. Each month he plans to save 10% more than the previous month. How
much money will he have at the end of December?
O$203.74
O$177.34
O$227.69
O$185.22

Answers

The amount of money that he should have at the closing of December should be $227.69.

The correct answer choice is option C

How to find total savings?

Given that,

Starting amount = $24

And, it plans to save 10% more as compared to the last month.

The amount of money that he should have at the closing of December can be solved using the concept of geometric sequence.

First term, a = $24

Common ratio, r = 1.10

Number of terms, n = 7

So,

Sn = a1×(r^n -1)/(r -1)

S7 = 24×(1.10^7 -1)/(1.10 -1)

= (24×0.948717) / 0.10

= $227.69

The total amount Cory will have saved by the end of December is approximately $227.69

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Answer:

  (c)  $227.69

Step-by-step explanation:

The amounts Cory will be adding to his account comprise a geometric series with first term $24 and each successive term 10% more, or 1.10 times the previous term. The total amount Cory will have saved by the end of December is the sum of 7 terms of the series.

__

sum of geometric series

The sum of ...

  24 +1.10×24 +1.10²×24 +... +1.10⁶×24

is given by the formula ...

  Sn = a1×(r^n -1)/(r -1)

where a1 is the first term (24), and r is the common ratio (1.10).

formula application

For the series representing Cory's deposits, we have ...

  S7 = 24×(1.10^7 -1)/(1.10 -1) = 24×0.948717/0.10 ≈ 227.69

At the end of December, Cory will have about $227.69.

_____

Additional comment

A financial calculator or app can also tell you the value of an annuity with a 10% increase per period.

The graph of a function is f(x)=3√x.
Based on this, find:
a) F(0,75), F(9), F(7).
b) the value of x with F(x) = 3;6;7.

Answers

Answer:

F(0.75)= 3/2 sq. root 3

F(9)= 9

F(7)= 3 sq. root 7

b) x= +-1

x=+-4

x= +- 49/9

PLease help me solve this

Answers

Answer: 729

Step-by-step explanation:

[tex]\frac{1}{3^{-2} * 3^{-4} * (-1)^{2} }[/tex]

3^-2 = 1/9

3^-4 = 1/81

(-1)^2 = 1

1/(1/9 * 1/81 * 1)

1/ 1/729 = 729

Find the equation of a line passing through (3,4) and (1,-4). Enter your answer in the slope-intercept form (namely, type your answer exactly in the form of y = mx + b).​

Answers

Answer:

y=4x−8

Step-by-step explanation:

A unicycle wheel makes five rotations. The unicycle travels 37.94 feet. Find the diameter of the wheel in inches. Use 3.14 for pi. Round to the nearest tenth of an inch

Answers

Answer:

Im not completely sure tho

Step-by-step explanation:

3.141529 I think so 3.14

Two corresponding sides of two similar triangles are 3 cm and 5 cm. The area of the first triangle is 12 cm. What is the area of the second triangle?

Answers

Since the are of the first triangle is 12 cm², the area of the second triangle is 33.33 cm².

To answer the question, we need to know what similar triangles are

What are similar triangles?

Similar triangles are triangles in which the ratio of their corresponding sides is constant.

Given that the corresponding sides of the two similar triangles are 3 cm and 5 cm respectively. Also, the area of the first triangle is 12 cm². We need to find the area of the second triangle.

Area of second triangle

Since the triangles are similar, we have that

(side of second triangle/side of first triangle)² = Area of second triangle/Area of first triangle

Area of second triangle = (side of second triangle/side of first triangle)² × Area of first triangle

= (5 cm/3 cm)² × 12 cm²

= 25/9 × 12 cm²

= 25/3 × 4 cm²

= 100 cm²/3

= 33.33 cm²

So, the area of the second triangle is 33.33 cm².

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Answer me pleaseeee. What is 3*3*3*3*3*3*3*3*8*8*0*8*8*9*8*6? Gk test​

Answers

Answer:

0

Step-by-step explanation:

Since we're multiplying by 0, the entire product becomes 0.

Answer:

it's 0.

Step-by-step explanation:

3*3*3*3*3*3*3*3*8*8*0*8*8*9*8*6

= 0

there is a zero hidden . so it's zero.

help pls!!1!1!1!1!1!1!1!!1!1!1!1

Answers

boys - high ropes course
girls - white water rafting

hope this helps!!

Answer:

a) high ropes course

b) white water rafting

Step-by-step explanation:

The Code of Conduct ____________ for military members when isolated or held against their will by entities hostile to the U.S.

Answers

The Code of Conduct is a moral guide for military members when isolated or held against their will by entities hostile to the U.S.

What is a code of conduct?

A code of conduct is a set of laid down rules that sets the standard for behavior under specific circumstances.

Hence, the Code of Conduct is a moral guide for military members when isolated or held against their will by entities hostile to the U.S.

Missing parts;

The Code of Conduct is a ____________ for military members when isolated or held against their will by entities hostile to the U.S. moral guide recommended procedure mandatory directive direct order

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Graph the function y = x3 + x2 – 6x + 5. What are the coordinates, to the nearest tenth, of the relative maximum of the graph?

(1.1, 0.9)
(1.5, 1.3)
(–2.2, 15.8)
(–1.8, 13.2)

Answers

The coordinates, to the nearest tenth, of the relative maximum of the graph is (-1.8,13.2)

How to determine the relative maximum?

The equation of the function is given as:

y = x^3 + x^2 – 6x + 5

Next, we plot the graph of the function (see attachment)

From the attached graph, we have the relative maximum to be at:

(x,y) = (-1.8,13.2)

Hence, the coordinates, to the nearest tenth, of the relative maximum of the graph is (-1.8,13.2)

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In a class of students, the following data table summarizes the gender of the students and whether they have an A in the class. What is the probability that a student is a
female given that they have an A?

Answers

The probability that a student is a female given that they have an A is; 2/7

How to find the probability?

From the given table, we see that;

Number of males that got A = 4

Number of males that did not get A = 8

Number of females that got A = 6

Number of females that did not get A = 3

The probability that a student is a female given that they have an A is;

P(Female|A) = 6/(4 + 8 + 6 + 3)

P(Female|A) = 6/21 = 2/7

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Question 6(Multiple Choice Worth 1 points)
(01.05 LC)
Which calculation can be used to find the value of q in the equation q³ = 64?

Answers

Answer:

q = ³√64

(cube root 64 )

explanation :

we have to find the value of q but it's given q³ so to find the value of only q we send ³ to other side and it turns into cube root

for example :

like when it's q² = 64 it will be q = ²√64

Will give 100 points!!

Answers

Answer:

[tex]\large{\boxed{\sf 2x+h-4}}[/tex]

Explanation:

f(x) = x² - 4x + 3

f(x + h) = (x + h)² - 4(x + h) + 3

Solving Steps:

[tex]\rightarrow \sf \dfrac{(x + h)^2 - 4(x + h) + 3 - (x^2 - 4x + 3)}{h}[/tex]

[tex]\rightarrow \sf \dfrac{x^2 + 2xh + h^2 - 4x -4h+3-x^2+4x-3}{h}[/tex]

[tex]\sf \rightarrow \dfrac{2xh+h^2-4h}{h}[/tex]

[tex]\rightarrow \sf 2x+h-4[/tex]

f(x)=x²-4x+3f(x+h)=(x+h)²-4(x+h)+3=x²+2xh+h²-4x-4h+3

Put values

[tex]\\ \rm\Rrightarrow \dfrac{x^2+2xh+h^2-4x-4h+3-x^2+4x-3}{h}[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{2xh+h^2-4h}{h}[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{h(2x+h-4)}{h}[/tex]

[tex]\\ \rm\Rrightarrow 2x+h-4[/tex]

I NEED THIS NOW PLSSSSS

In terms of the number of moose, what is the relative frequency of male moose, female moose, adult moose, and baby moose? Write your answers as simplified fractions.

Elk Mountain Goat Deer Moose
Male 105 71 42 52
Female 120 93 63 34
Adult 173 103 72 58
Baby 52 61 33 28

Answers

The relative frequencies for the given table are:

Male → 13/44Female →  17/86Adult → 29/86Baby → 7/43

How to get the relative frequencies?

The relative frequency of a given element out of a set, is given by the quotient between the number of that element and the total number of the set.

Here we can see that the total number of moose is:

52 + 34 + 58 + 28 = 172

There are 52 male moose, then the relative frequency for male moose is:

M = 52/172 = 26/86 = 13/44

There are 34 female moose, then the relative frequency is:

F = 34/172 = 17/86

There are 58 adult moose, so the relative frequency is:

A = 58/172 = 29/86

There are 28 baby moose, so the relative frequency is:

B = 28/172 = 14/86 = 7/43

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Jordan is planning to buy a vehicle. He has the following choices.

Type: sedan or SUV
Transmission: 5-speed or automatic
Color: red, blue, black, green, or silver
Top: sunroof or no sunroof

Jordan says that he has a total of 2 + 2 + 5 + 2, or 11, possible vehicle choices. What is Jordan’s error?
He should have multiplied the sum by 4.
He should have added only the choices for type and transmission.
He should have multiplied only the choices for type and transmission.
He should have multiplied the choices, instead of adding them.

Answers

Jordan's error is He should have multiplied the choices, instead of adding them. Thus, the correct option is D.

What are the number of choices?

Whenever you have multiple choices, you have to multiply the number of choices you have in different groups to get the final number of choices.

For example, you have to make a sandwich and you can either use white bread or brown bread. Also, you can either use jam or peanut butter or veggies. Therefore, here the number of choices is 6.

White bread and JamWhite bread and Peanut butterWhite bread and VeggiesBrown bread and JamBrown bread and Peanut butterBrown bread and Veggies

Similarly, Jordan has two choices for type, two choices for transmission, 5 choices for color, and 2 choices for the top. Therefore, the number of choices Jordan has is,

Number of choices in total = 2 × 2 × 5 × 2

Hence, Jordan's error is He should have multiplied the choices, instead of adding them. Thus, the correct option is D.

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Answer:

D

Step-by-step explanation:

Find the output, y, when the input, a, is 4.
-8-0
6
2
09
a

Answers

2 is the output but I’m not sure make sure it is right

The ________ could be used to describe a data set by itself, while ___________ would almost never be used to describe a data set by itself.
A. mean ; interquartile range
B. range ; mean
C. interquartile range ; mean
D. mean ; range

Answers

The mean could be used to describe a data set by itself, while interquartile range would almost never be used to describe a data set by itself.

What is Descriptive statistics?

These are operations which are used to summarize certain characteristics a set of data has.

Mean and range deals with the full set of data while interquartile range measures just the middle half of the data and is denoted as option A.

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A book editor wants to check a sample of pages in a 100-page magazine for errors. Which of the following is an example of systematic random sampling? A. Pick 20 random numbers. Check pages that match. B. Check every page in the book except the last 30. C. D. Check only even page numbers.

Answers

The following is an example of systematic random: D. Check only even page numbers.

What is Systematic sampling?

Systematic sampling is a sampling method use my researcher in which the  researcher tend to choose or pick a group of people at periodical interval.

Based on the scenario give checking only even page numbers is an example of systematic random sampling.

Therefore the correct option is D.

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Chad created a table that shows the ratio of his sports game cards.

Chad’s Cards
Card Type
Outfield
Infield
Catcher
Pitchers
Quantity
3
4
1
2

Next, Chad created the graph below showing possible ratios for Pitchers cards to Infield cards in his deck. Which of the following statements are true?

On a coordinate plane, a graph titled Chad's Cards has Damage on the x-axis and Defense on the y-axis. Points (1, 2), (2, 4), (3, 6), and (4, 8) are plotted.
Chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a Catcher card.
Chad should not have included the values (1, 2) and (3, 6) because the ratio would be different for these points.
Chad should have changed the axes for the Infield and Pitchers cards so it was the same order as the table.
Chad needs to switch the order of each (x, y) value to show the decreasing values of the Pitchers cards.

Answers

The true statement for Chad graph is that:

On a coordinate plane, a graph titled Chad's Cards has Damage on the x-axis and Defense on the y-axis. Points (1, 2), (2, 4), (3, 6), and (4, 8) are plotted.

What is a coordinate plane?

A  coordinate plane is known to be a kind of  two-dimensional plane that is often created by two number lines of intersection.

Note that there is the horizontal number line known as  the x-axis and the  vertical number line also called the y-axis.

Looking at the question (Image attached), for every two offense, there is 4 defense.

So we can say that the proportion of  offense to defense is 1:2

Therefore, the correct  value or the graph is (1, 2), (2, 4), (3, 6), and (4, 8) as it doubles itself.

The true statement for Chad graph is that:

On a coordinate plane, a graph titled Chad's Cards has Damage on the x-axis and Defense on the y-axis. Points (1, 2), (2, 4), (3, 6), and (4, 8) are plotted.

Therefore, option A is correct.

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Answer: A

Step-by-step explanation: I did the test and got it right

Mark transferred songs from his computer onto his portable music player. He transferred songs in minutes. How many songs did he transfer per minute?

Answers

Answer:

Need more info

Step-by-step explanation:

You're working with rates. It's relatively straight forward. Take miles per hour for instance. If you travel 60 miles in one hour, you're rate of speed is 60 miles per hour.

You haven't given any data in this example but the idea is the same. Let's say he transferred 10 songs in 5 minutes. That's means his rate is 10 songs per 5 minutes. You can change that to a fraction so it's easier to understand:

[tex]\frac{10 songs}{5minutes}[/tex]

Now just reduce the fraction and it becomes

[tex]\frac{2 songs}{1 minute}[/tex]

Also known as 2 songs per minute

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Hardcover books are shipped 3 days after an order is placed. soft cover books always take at least 1 day less than hardcover books to ship after the order is placed. special apparel orders take as long as or longer than hardcover books to ship after the order is placed. conclusion: special apparel orders take longer to ship than soft cover books. if the assumptions are true, is the conclusion: can u solve this plsss Find x.A composite figure consisting of two right angled triangles lying next to each other. Two sides of the triangle on the left are labeled as 13 millimeters and 5 millimeters. Two sides of the triangle on the right are labeled as x and 35 millimeters. Which fraction is equal to 0.38? A. 3/8 B. 3/11 C. 19/5 D. 19/50 Determine the frequency of the radar wave. [Show all calculations, including the equation and substitution with units.] 4. Which of the following is not a common benefit of electronic claims submission?a. reduced error rateb. processing of personal injury protection (PIP) formsc. faster reimbursement d. confidence that all claims in file were received Which personality trait describes the will to keep trying even after failing?A. AggressivenessB. VulnerabilityC. PersistenceD. Humility Planetary Nebula/White Dwarf Stars - Little Ghost Nebula. Some red giant stars develop into planetary nebulas as their cores continue to contract, to increase in temperature, and to burn and vent the remaining gases into interstellar space. Eventually, the core collapses to the point where it is hot enough to ionize the vented gases, forming a relatively short-lived (~10,000-20,000 years) planetary nebula. The remaining core collapses into a white dwarf star. The vented materials from the planetary nebula play an important role in enriching the universe in elements with atomic weights less than 26 (forming the basis for carbon-based life like ourselves!). Which type of star will form a planetary nebula How many moles of a gas can be contained in a 1600-cm flask at 25C and 75 kPa? 4. Study the table below. Which feature(s) do the hummingbird and lion share?Limbs are arms, legs, and wings. Mammary glands are used for feeding offspring with milk.LungsLimbsHoovesMammary Glands Match the following items:1. Preview statement2. Anecdote3. Transition4. Conclusion5 a questiongets the audience's attention invites the audience to participate gives the audience a reason to listen a quotation that illustrates your overall point begins with "in addition" or "next" In 35 words or fewer, what do you think Walker is saying about culturalidentity? What are human sources of excess nutrients (nitrates and phosphates) in streams? How did John D. Rockefeller vertically integrate his monopoly in 1882?A.He created a trust that controlled oil wells, refineries, and distribution networks.B.He created a trust that controlled ninety percent of the nation's oil refineries.C.He purchased coal plants around the country to add to his business.D.He purchased iron mines around the country to add to his business. Your country has overthrown your king and is trying to set up a democracy. What are two challenges you are likely to face in setting up a democratic government? What are two benefits of becoming a democracy? Question in the Picture Read the passage from Sophies paper on Response to Erik of Sweden.Although Queen Elizabeth is polite, she also seems a bit annoyed. For example, she says, "It seems strange for your Serene Highness to write that you understand from your brother and your ambassadors that we have entirely determined not to marry an absent husband; and that we shall give you no certain reply until we shall have seen your person.By including the quote, Sophie isclarifying the overall purpose of the text.adopting a second-person point of view.adding implicit information to her conclusion.using textual evidence to support her inference. which event marked the end of nuclear research assistance from the united states in the late 1970s? a. the fall of shah of Iran b. the invasion of afghanistan c. the iran- constra affair d. the election of jimmy carter the process by of cell division in which one parent cell produces two identical daughter cells is Which of the following explains the central idea of Patrick's speech?He calls his countrymen to kill the British people.People should come forward and fight against Great Britain.The government of Great Britain should give them freedom.