Suppose that we wish to find the expected number of girls for a​ four-child family. Complete the following probability distribution assuming that girls and boys are equally likely. Question content area bottom Part 1 Complete the probability distribution. Number of​ Girls, x Probability​ P(x) Product xtimes​P(x) 0 one sixteenth 0 1 one fourth one fourth 2 three eighths three fourths 3 one fourth three fourths 4 one sixteenth one fourth ​(Simplify your​ answers.) Part 2 The expected value​ E(x) of the number of girls in a​ four-child family is the sum of the products in the far right column​ above, which is enter your response here. ​(Type an integer or a simplified​ fraction.) Part 3 Does the answer for the expected value agree with your​ intuition? Explain. A. Boys and girls are equally​ likely, so​ "half" the children are expected to be girls. The answer for the expected value agrees. B. Boys and girls are not equally​ likely, so less than​ "half" the children are expected to be girls. The answer for the expected value does not agree. C. Boys and girls are equally​ likely, so​ "half" the children are expected to be girls. The answer for the expected value does not agree. D. Boys and girls are not equally​ likely, so more than​ "half" the children are expected to be girls. The answer for the expected value agrees.

Q&A Education