X and Y are independent random variables. X has mean 100 and standard deviation 12. Y has mean 30 and standard deviation 9. What are the mean and standard deviation of (X–Y)?

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asked Jan 16, 2022 79.0k views

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X and Y are independent random variables. X has mean 100 and standard deviation 12. Y has mean 30 and standard deviation 9. What are the mean and standard deviation of (X–Y)?

Mathematics
college

Vishnu Mishra asked

by Vishnu Mishra

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Answer:

x is down and up and y is up then down

Explanation:

I think

Derrek answered Jan 23, 2022

by Derrek

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