Question 9 of 20 Suppose that Adam. is a candidate for city council in a large m
ID: 3364952 • Letter: Q
Question
Question 9 of 20 Suppose that Adam. is a candidate for city council in a large metropolitan area while campaigning, he claimed that 62% of adult city residents meet or exceed the recommendations of the Center for Disease Control and Prevention (CDC) for physical activity each week. Jim, a reporter for a local fact-checking website, suspects that Adam pulls numbers out of thin air without doing any research. To test Adam's assertion, Jim surveyed 300 randomly selected adult city residents and found that 171 of them meet or exceed the CDC's recommendations for weekly physical activity. Jim's sample statistics are summarized in the table. The standaro error and z-statistic were computed using the null hypothesis Ho:p = 0.62 where p is the proportion of all adults in the city who meet or exceed the CDC's recommendations for physical activity each week Sample Sample Sample Standard count proportionerrortstic SE 300 0.5700 -1.7842 Do the data summarized in the.table.nrovide.evidence that Adam's claim was incorrecr? To heln answer this auestion use
Explanation / Answer
8:
The p-value is
2P (z < -1.7842) = 0.0744
9:
The p-value is
P(z > 2.12) = 0.017