Mathematics
Mathematics, 18.11.2020 17:50, lizycacer863

The distribution of random variable R has mean 10 and standard deviation The distribution of random variable S has mean 7 and standard deviation 3. If Rand S are independent, what are the mean and standard deviation of the distribution of R-S? A
Mean 3 and standard deviation 1
B
Mean 3 and standard deviation 5
C
Mean 3 and standard deviation 7
mong
D
Mean 17 and standard deviation 1
E
Mean 17 and standard deviation 5

answer
Answers: 3

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