2 years ago

I need the answers to a b c and d PLZ DUE AT 11:59PM ITS 9:23PM

Mathematics

1 answer:

Nookie1986 [14]2 years ago

3 0

Answer:

do u even still need the answer its been aweek since you asked it and it was due that same day

Step-by-step explanation:

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Using addition of variables, it is found that the mean of S is of 73 and the standard deviation is of 8.5.

<h3>What happens to the mean and the standard deviation when two variables are added?</h3>

The mean is the sum of the means.

The standard deviation is the square root of the sum of variances.

In this problem, for variables A and B, we have that:

$\mu_A = 35.5, \sigma_A = 5.1$

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More can be learned about addition of variables at brainly.com/question/26156502

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