Kizspy | Question: 17
(Choose 1 answer)
The random variable X represents the number of girls in a family of three children. Assuming that boys and
girls are equally likely, find the mean and standard deviation for the random variable X.
A. mean: 2.25; standard deviation: 0.87
B. mean: 2.25; standard deviation: 0.76
C. mean: 1.50; standard deviation: 0.87
D. mean: 1.50; standard deviation: 0.76
E. None of the other choices is correct
