22.A medical researcher says that at least 27% of adults are smokers. In a random sample of 200 adul

22.A medical researcher says that at least 27% of adults are smokers. In a random sample of 200 adults, 22.5% say they are smokers. At α = 0.03, do you have enough evidence to reject the researcher’s claim?

a.Write the claim mathematically and identify H0 and Ha.

b.Find the critical value(s) and identify the rejection region(s).

c.Find the standardized test statistic.

d.Decide whether to reject or fail to reject the null hypothesis.

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