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## Given independent random variables, X and Y, with means and standard deviations as shown, find the mean

Given independent random variables, X and Y, with means and standard deviations as shown, find the mean and standard deviation of each of the variables in parts a to d.

mean | SD | |

X | 100 | 13 |

Y | 15 | 3 |

a. 5X

b. Y + 3

c. X + Y

d. X - Y