Question
Conduct a hypothesis test for the following problem:
A medical researcher says that at least 20% of US adults are smokers. In a random sample of 200 US adults,
18.5% say that they are smokers. At a = 0.01 significance level, is there enough evidence to reject the
researcher's claim?
Ho:
p = 0.20 p> 0.20 p<0.20
Ha:
p< 0.20 p 0.20 p > 0.20
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Conduct a hypothesis test for the following problem: A medical researcher says that at least 20% of US adults are smokers. In a random sample of 200 US adults, 18.5% say that they are smokers. At a = 0.01 significance level, is there enough evidence to reject the researcher's claim? Ho: p = 0.20 p> 0.20 p<0.20 Ha: p< 0.20 p 0.20 p > 0.20

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