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denis23 [38]
3 years ago
12

How do you find the exact surface area of a rectangular prism?

Mathematics
1 answer:
Gemiola [76]3 years ago
4 0
The exact formula for surface area for a rectangular prism is 2lw+2lh+2wh. Where l=length. W=width.h=height.
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You are curious about the average number of yards Matthew Stafford throws for each game for the Detroit Lions. You randomly sele
Damm [24]

Answer:

The margin of error for this estimate is of 14.79 yards per game.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

T interval

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 = 20 - 1 = 19

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.093

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample.

You randomly select 20 games and see that the average yards per game is 273.7 with a standard deviation of 31.64 yards.

This means that n = 20, s = 31.61

What is the margin of error for this estimate?

M = T\frac{s}{\sqrt{n}}

M = 2.093\frac{31.61}{\sqrt{20}}

M = 14.79

The margin of error for this estimate is of 14.79 yards per game.

3 0
3 years ago
Solve for the value of z: 90/15=6/z help asap !!
Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

90/15=6/z

6=6z

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irina1246 [14]

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Step-by-step explanation:

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Step-by-step explanation:

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tekilochka [14]

Answer:

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Step-by-step explanation:

4 0
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