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
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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
Transcribed Image Text:Test
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:
0.20 p> 0.20 p<0.20
На:
p< 0.20 p 0.20 p > 0.20
Claim: Select an answer
What is the level of significance given in this problem?
What is the critical value for this sample?
What is the test statistic for this sample?
What is the rejection region for this sample?

Transcribed Image Text:This leads to a decision to Select an answer
As such, the final conclusion is that...
There is insufficient evidence to reject the medical researcher's claim that at least 20% of US adults
are smokers
There is sufficient evidence to reject the medical researcher's claim that at most 20% of US adults
are smokers
O There is insufficient evidence to reject the medical researcher's claim that at most 20% of US adults
are smokers
O There is sufficient evidence to reject the medical researcher's claim that at least 20% of US adults
are smokers
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