The American Heart Association is about to conduct an anti-smoking campaign and wants to know the fraction of Americans over 21
who smoke.
Step 2 of 2:
Suppose a sample of 656
Americans over 21 is drawn. Of these people, 124 smoke. Using the data, construct the 80% confidence interval for the population proportion of Americans over 21
who smoke. Round your answers to three decimal places.
answer = (0.169, 0.209)
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