Jason S.

Probability

1 month, 4 weeks ago

"4. If P(X) = X what are the possible values of X for it to be a probability distribution? A. 0, 2,3 C.2,3,4 B. 1,2,3 D 1,1,2
For numbers 5-6, refer to the probability distribution shown below. X 2 3
P(X)
1/8
3/8
3/8
1/8
5. What is the mean of the probability distribution? A. 1.2 C 1.6 B. 1.5 D.1.8
6_ What is the variance of the probability distribution? A. 0.50 C.1.00 B. 0.75 D_ 1.25
7_ Which of the following statements is NOT TRUE about variance? A cannot be negative B. greater than 0 C. less than 0 D. a measure of 'spread for a distribution of a random variable"