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Margaret [11]
3 years ago
10

20 pts to whoever helps!!

Mathematics
2 answers:
VladimirAG [237]3 years ago
7 0
<h3>Answer: B) 31.348</h3>

======================================

Work Shown:

We will never use the alpha = 0.05 value when computing the test statistic. So we can ignore alpha for this particular problem.

-------

n = 40 is the sample size.

s = 2.6 is the sample standard deviation

\sigma = sigma = 2.9 is the population standard deviation (ie the claimed standard deviation for all the pay phones)

Test Statistic for chi-square

\chi^2 = \frac{(n-1)*s^2}{\sigma^2}\\\\\chi^2 = \frac{(40-1)*(2.6)^2}{(2.9)^2}\\\\\chi^2 = \frac{39*6.76}{8.41}\\\\\chi^2 = \frac{263.64}{8.41}\\\\\chi^2 \approx 31.3483947681332\\\\\chi^2 \approx 31.348\\\\

padilas [110]3 years ago
3 0
The answer is B because—MOMMY I WANT CANDY ok sweetie I’ll give you some but Right now— OR ELSE I WILL TELL DADDY YOU CHEATED ON HIM— okay!! After giving my son candy.. DADDY YOU HOME!! Then he whispered “mom cheating on you” he gasped SWEETHEART I WANT A DIVORCE— but I’m busy helping someone on Brainly NOT NOW!!
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Given:

The table of values is

x        y

-4      2

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Solution:

From the given table consider any two point.

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y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)

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Using distributive property, we get

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Step-by-step explanation:

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Answer:

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Use the side lengths to classify the triangle as acute, right, or obtuse. Compare the square of the length of the longest side with the sum of the squares of the lengths of the two shorter sides

2) Square root of sum of the squares of the two smaller sides is equal to the third longer side, then its a right triangle.

In our case,

√20^2+23^2≈30.4795<41.

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Since the sum of the squares of the two shorter sides is < the square of the longer side, its an obtuse angle triange

Step-by-step explanation:

Hope it is helpful....

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