The Statistical Abstract of the United States (109th edition) reported that the mean age of all U.S. registered merchant vessels is 23.6 years. Records for 38 randomly selected U.S. registered grain cargo ships showed that the mean age was 26.7 years with a standard deviation of 5.2 years. Is this type of ship older than the national average of all merchant vessels
Answer:
Yes, we can conclude that the ship is older than the national average
Step-by-step explanation:
Population mean, μ = 23.6
Sample mean, xbar = 26.7
Sample size, n = 38
H0 : μ = 23.6
H0 : μ > 23.6
The test statistic :
(xbar - μ) ÷ (σ/√(n))
(26.7 - 23.6) ÷ (5.2/√(38))
3.1 / 0.8435513
Test statistic = 3.675
Decision region :
Reject H0 ; if |Tstatistic| > |Tcritical|
Since we are given the sample standard deviation ; we use the T test distribution
df = 38 - 1 = 37
Tcritical at df = 37 ; α = 0.05 ; rigth tailed :
Tcritical(0.05, 37) = 1.687
3.675 > 1.687 ; Hence, we reject H0 and conclude that there is enough evidence that this type of shop is older than the national average.
PLEASE TELL ME THE ANSWER BUT DONT ATACH LINKS PLEASEEEEEEEE!!!!!
Answer:
B)
Step-by-step explanation:
Answer:
B) [tex]3.87[/tex]×[tex]10^{8}[/tex]
What is the relationship between how Jews were portrayed to the public and their persecution during the holocaust?
Hint: Find how they were portrayed to the public by Hitler and then follow that up with How were they persecuted during the Holocaust?
Answer:
Step-by-step explanation:
This is actually in the wrong place. It should probably be in English or History, but I'll answer it anyway.
You need to start by seeing the way they were portrayed in cartoons, in writing (mainly newspapers), on the radio, in speeches and on the streets. Start with the Bible. The Old Testament was about the law mostly and behavior as much as anything. The people who lived and were governed by the OT generally were very pious unless they were rebellious sinners.
The New Testament is a slightly different matter. In most of Europe the peasantry thought the Jews were Christ Killers. That thought was dominent throughout the Middle Ages. It isn't true. Jesus was a Jew, so were the disciples, so were the huge crowds that followed Him to at least hear what he had to say.
It was only the ruling classes (The Pharisees, the Sadducees, and the scribes and teachers), that were not fond of Jesus. But that fact was not emphasized. Out of that picture and the displacement of the Jews after the Temple was destroyed, grew the caricatures of what the Jews were.
Anti Semitism was quite common in Europe. Most people fell for the propaganda that said the Jews were the spawn of the Devil. It became easy to kill those that were felt to be evil.
I urge you to start your own study of what happened. Start with the Inquisition.
Can someone please help me I can will mark u brilliant
Answer:
8
Step-by-step explanation:
if you take all of the numbers 5 5 6 6 7 7 7 8 8 8 9 9 9 9 10
8 is in the midle thus making it the median
i apologise if this is wrong i have not done this kind of math in a while, but i hope this helps
Answer:
its 8...................
Find an explicit formula for the geometric sequence -9\,,-18\,,-36\,,-72,...
Answer:
[tex]f(x)=-9(2)^(^x^-^1^)[/tex]
Explanation:
First, we find the common ratio by dividing any term by its previous term. We should do this a couple of times to make sure it's consistent. In this case, our common ratio is 2. Our first (or 1th) term of the sequence is -9, so our formula becomes
[tex]f(x)=-9(2)^(^x^-^1^)[/tex].
I need help with this question I don’t understand it much?
Answer:
-5
Step-by-step explanation:
I think the m is for measure of line AB
Write the equation of a parabola in conic form with a focus at (-2,-7) and a directrix at y=-1
Need help with this
Answer:
(-2-h)^2+(-7-k)^2=r^2
Step-by-step explanation:
(x-h)^2+(y-k)^2=r^2 this is the normal equation now u just need to substitue those in it
A secret agent being a mathematician, transmitted an important 2-digit locker number in
the following manner: “The difference in the digits is four. The sum of the number and the number formed by reversing the digits is 132.” Find the locker number.
Answer:
48
Step-by-step explanation:
Since there are only a few possibilities, I was able to guess and check:
15+51=66 and 66 is not 132
26+62=88 and 88 is not 132
37+73=110 and 110 is not 132
48+84=132 and 132 is 132.
Please give Brainliest!
all the steps used to solve -3/4x = -24
Answer:-x=2
Step-by-step explanation: -3/4x=-24 divide -3/4x for each of the numbers, which is equal to -x=2
How much interest is to be paid at 1500 principal, 7% compounded annually, and for 3 years
Answer:
I = 337.56
Step-by-step explanation:
Given that,
Principal, P = 1500
Rate, R = 7%
Time, t = 3 years
We need to find the interest if it is compounded annually. We know that, the amount is given by :
[tex]A=P(1+\dfrac{r}{100})^n[/tex]
Put all the values,
[tex]A=1500\times (1+\dfrac{7}{100})^3\\\\A=1837.56[/tex]
We know that,
Interest = Amount - Principal
I = 1837.56 - 1500
I = 337.56
Hence, the interest is equal to 337.56.
Write the ratios for sin A and cos A.
Answer:
Step-by-step explanation:
I am pretty sure it is B because if you do SOH CAH TOA you get that
pls help this is due in 10 minutes I don’t wanna fail
Answer:
5.12
6.14
7.36
8.17
9.8
10.24
if you are to measure the following figure for real,what tool(ruler or meter stick) and unit of measur(m, cm, in,) will you use..........
help me guys plsss
Find the measurement of angle FRQ
Answer:
90 degrees
Step-by-step explanation:
I need help please this isath i need my grade thx alot
Answer:
A, -475ft
Step-by-step explanation:
Answer: -475 ft
Step-by-step explanation: -95 x 5= -475
51
13
14
a) How many words (with or without any meaning) can be formed by arranging the
letters in the word MEDITERRANEAN?
How many words ?
Answer:
may be 13 I hope this is the right answer
which value form the set {0, 1,17, 72 make the equation n+8=9 true
Answer:
n + 8 = 9
therefore 9-8 = 1
Angle Relationships
Determine the height of each triangle. Round to the nearest foot.
a. 7 ft
b. 5 ft
c. 8 ft
d. 4 ft
Please select the best answer from the choices provided
Answer:
A. 7 ft
Step-by-step explanation:
I calculated it logically
Someone help me pls!!!!????
Answer:
Greatest would be Chlorine Krypton Argon Fluorine and least Hydrogen
Answer:
J, I, G, K, H.
Step-by-step explanation:
The elements go from least to greatest, and since they are negatives, we sort them from the highest negative to the lowest negative.
determine if the two triangles are congruent. If they are, State how you know. NO LINKS!!!!
9514 1404 393
Answer:
SASnotSSSAASStep-by-step explanation:
Look at the angles and sides that are marked, and their relationships to each other. Shared sides are congruent to themselves. Vertical angles are congruent. The possible congruence theorems are ...
SSS SAS AAS ASA (and HL for right triangles--not applicable here)
__
1. two marked sides and the vertical angle between are congruent. The triangles are congruent by the SAS theorem.
2. only one side and angle are marked. Insufficient information. Not congruent.
3. two marked sides and the shared side are congruent. The triangles are congruent by the SSS theorem.
4. the vertical angles, the marked angles, and the marked sides are congruent. The triangles are congruent by the AAS theorem.
find the slope of the line passing through
-2, 7 ) and ( 0, 1 )
Answer:
-3
Step-by-step explanation:
Consider the following vectors: y = (2,4), v = (-1, -1), and w = (7.-2).
What is the vector for 3u + v- 2w in component form?
(20,15)
(10,7)
(-6,1)
(-9.15)
Answer:
(-9.15)
Step-by-step explanation:
We are given these following vectors:
u = (2,4), v = (-1,-1), w = (7,-2)
What is the vector for 3u + v- 2w in component form?
3u + v - 2w = 3(2,4) + (-1,-1) - 2(7,-2) = (6,12) + (-1,-1) + (-14,4) = (6 - 1 - 14, 12 - 1 + 4) = (-9, 15)
The answer is (-9,15).
10. If ABCD is a kite, DB=48 in. and CE=7 in. find DC. *
49 in.
23 in.
25 in.
47 in.
Answer:
25 in.
Step-by-step explanation:
DEC is a right triangle. <DEC is a right angle.
(DE)² + (EC)² = (DC)²
DE = ½DB = ½(48 in.) = 24 in.
(24 in.)² + (7 in.)² = (DC)²
576 in.² + 49 in.² = (DC)²
(DC)² = 625 in.²
DC = 25 in.
What is the area of a circle with a radius of 4 ft?
(Use 3.14 for Pi.)
Step-by-step explanation:
A = Pi x r^2
r=4_____________
Answer:
50.26548
50.27 Rounded to the hundredths place .
WHOEVER ANSWERS BOTH GETS BRAINLIEST AND POINTS , pls help and no links!!
Answer:
See below for answers and explanations
Step-by-step explanation:
1) Substitute d=100 into the equation and solve for s:
s=sqrt(9.81d)
s=sqrt(9.81(100))
s=sqrt(981)
s≈31.32
Therefore, the speed of the wave will be about 31.3 m/s
2) Substitute d=1000 into the equation and solve for s:
s=sqrt(9.81d)
s=sqrt(9.81(1000))
s=sqrt(9810)
s≈99.05
Therefore, the speed of the wave will be about 99 m/s
A stadium has 8,436 seats that are divided into 12 different sections. Each section has the same number of seats.
How many seats are in each of the 12 sections? please show the work
Answer:
703
Step-by-step explanation:
You divide the 8436 by 12.
1. You can't divide the 8 by 12 so skip that
2. You can divide 84 by 12 so you get 7
3. Bring down the 3 (you have 0 as a remainder). You can't divide that so put a 0
4. Bring down the 6 and divide that (36) and you get 3
5. Your final answer would be 703.
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Some children measured the lengths of their feet. The lengths are given in the line plot. What is the difference in length between the shortest and longest foot?
Answer:
Step-by-step explanation:
Help plzz will mark brainleast
Answer: I would say that it is 7
Step-by-step explanation:
30 : 24
b : 4 (divide both sides by 6)
5 : 4
Equivalent to 5 would be 7
Sorry if its wrong
How many holes need to be drilled for 24 parts
HELP JIMTHOMPSON5910
Explain what the diameter of a circle is. If you had the diameter of a circle, how could you solve for the circumference?
The diameter can be thought of as the width of the circle, more or less. More accurately, it's the distance from one point on a circle, through the center, to a point on the opposite side.
If we had a circle at point A, and some point on the edge of the circle point B, then line AB will form a third point C. Point C is on line AB and on the circle. Segment BC is a diameter.
We can measure the diameter with a straight line ruler, but we cannot do the same with the perimeter of the circle. The circumference is just a fancy name for "perimeter". Specifically, it only applies to circles. The way I remember it is that "circle" has "circ" in it, and so does "circumference". Furthermore, we can erase some letters of "circumference" to end up with "fence", which would go along an outer perimeter in a lot of cases. Overall, "circumference" makes me think of "circle fence".
How can we find the perimeter of a circle? Well we could use a cloth ruler to wrap around the edge of the circle. We'd have to make sure that none of the bendable ruler is out of place. So things could get tricky.
To find the circumference with a formula, we'll use this one here
C = pi*d
where pi = 3.14 approximately and d is the diameter
----------------------
For example, let's say the diameter is d = 10 feet. That would lead to a circle perimeter of....
C = pi*d
C = 3.14*10
C = 31.4
The circumference is approximate because pi = 3.14 is approximate. The units for the circumference in this case are in feet, so the distance around this particular circle is about 31.4 feet.