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genyjoannerubiera
genyjoannerubiera
10.03.2021 • 
Mathematics

A 2017 Marist and Yahoo News survey of 1,122 randomly selected US adults found that 52% had tried marijuana. Based on the survey results, the 95% confidence interval for p, the proportion of adults who have tried marijuana is (.490, .549). An organization for the legalization of marijuana puts out literature that states that over half of US adults have tried marijuana. Which is the best interpretation of whether the interval supports this claim? a.) Since the interval includes numbers greater than 50% as plausible values, the interval supports the organization’s claim.

b.) Since the interval’s point estimate is greater than 50%, the interval supports the organization’s claim.

c.) Since the interval is constructed using 95% confidence, we are 95% confident that the sample proportion is correct.

d.) Since the interval includes plausible values both below and above 50%, the interval does not support the organization’s claim.

e.) Since the majority of the interval is above 50%, the interval supports the organization’s claim.

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