Mathematics, 30.11.2019 05:00 galfaro19

The random variable x is normally distributed with mean 5 and standard deviation 25. the random variable y is defined by y = 2 + 4x. what are the mean and the standard deviation of y ? the mean is 20 and the standard deviation is 102.
a) the mean is 20 and the standard deviation is 50.
b) the mean is 22 and the standard deviation is 102.
c) the mean is 22 and the standard deviation is 100.
d) the mean is 22 and the standard deviation is 50.

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