SOLUTION: Suppose that 50,000 married adults in the United States were randomly surveyed as to the number of children they have. Let X = the number of children married people have. The res

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Question 1071058: Suppose that 50,000 married adults in the United States were randomly surveyed as to the number of children they have. Let X = the number of children married people have. The results of the survey are compiled and are used as theoretical probabilities. NOTE: The probability that a married couple had 7 or more children was so small, it was not included as part of the probability distribution.
X 0 1 2 3 4 5 6
P(x) 0.10 0.20 0.30 0.10 0.05 0.05

a. Find the probability that a married adult has three children.

b. Find the probability that a married adult has more than three children.

c. Find the expected value of this probability distribution.

d. Find the standard deviation of this probability distribution.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You have 7 X values but only 6 P(X) values.
Please correct and repost.