Part 5: Sampling Distributions: According to the Centers for Disease Control, about 36% of U.S. adults were obese in 2013. To see if that has changed since the last study, a random sample of 250 U.S. adults will be checked. a) Describe the sampling distribution model for the sample proportion (assuming no change in obesity rates) by naming the model and telling its mean and standard deviation. b) What is the probability that in this group over 15% of the children will be found to be nearsighted?
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Let p represent the proportion of U.S. adults who are obese, which is 0.36 according to the CDC. Let n represent the sample size, which is 250 in this case. Show more…
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