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kari74 [83]
3 years ago
11

6 m 6 m 19 m Not drawn to scale Find the volume of the triangular prism.

Mathematics
1 answer:
Aloiza [94]3 years ago
7 0
The answer is 3) 324
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The mean number of hours of flying time for pilots at Continental Airlines is 49 hours per month. Assume that this mean was base
Effectus [21]

Answer:

a) 17.09 hours

b) The 95% confidence interval estimate of the population mean flying time for the Pilots is between 31.91 hours and 66.09 hours

Step-by-step explanation:

We have the standard deviation of the sample, so we use the t distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 49 - 1 = 48

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 48 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.0106

The margin of error is:

M = T*s = 2.0106*8.5 = 17.09

s is the standard deviation of the sample. 17.09 hours is the answer for a.

The lower end of the interval is the sample mean subtracted by M. So it is 49 - 17.09 = 31.91 hours

The upper end of the interval is the sample mean added to M. So it is 49 + 17.09 = 66.09 hours

The 95% confidence interval estimate of the population mean flying time for the Pilots is between 31.91 hours and 66.09 hours

8 0
3 years ago
HELP PLEASE FAST!!!!!
MArishka [77]

Answer:

$10.50 an hour

Step-by-step explanation:

210/20 = 10.5

5 0
3 years ago
Pls i need this asap
Goryan [66]

Answer:

It would have to be (C) 50.27 because 25 is too short for a diameter of 8 seeing it would be 8x4 to get 32 in which 25 is not long enough for. So the answer is C.

6 0
3 years ago
X+7=4 Algebraic equation
Vaselesa [24]
The answer is x=  

-3

Hope I helped!

5 0
3 years ago
Read 2 more answers
65124 rounded to the nearest thousand
denpristay [2]
Correct Answer is 65000
4 0
3 years ago
Read 2 more answers
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