Advanced Placement (AP), 23.02.2021 22:40 cmfield8810
1. According to the United States Bureau of Labor, the proportion of married couples with
children where both of them work outside the home is 53%. You select a simple random sample
(SRS) of 80 married couples.
a. Sketch the sampling distribution of p-hat. Verify the conditions are met to use a normal
model. (6 points)
b. What is the probability that in a sample of 80 married couples, both work outside the home
in less than half of them? Show your work. (4 points)
Answers: 1
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