If X is a discrete uniform random variable ranging from one to eight, its mean is:
A)4.0
B)4.5
C)5.0
D)5.5

Question

Quizplus · Accepted Answer

The mean of a discrete uniform random variable is calculated by taking the sum of all the possible values and dividing by the total number of values. In this case, there are 8 possible values, ranging from 1 to 8. So, the mean is (1+2+3+4+5+6+7+8)/8 = 36/8 = 4.5. Therefore, the best choice is B) 4.5.

If X Is a Discrete Uniform Random Variable Ranging from One