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The claim is that the proportion of adults who smoked a cigarette in the past week...

The claim is that the proportion of adults who smoked a cigarette in the past week is less than .25 and the sample statistics include​ n=1018 subjects with 224 saying that they smoked a cigarette in the past week.

​a) State the null and​ alternative:

​b) The sample​ proportion, p, is

​c) The test​ statistic, z, is

​d) The​ p-value is

​e) Cicle the correct conlcusion.

A.

Because the​ p-value is less than .05 we can conclude that less than​ 25% of adults smoke.

B.

Because the​ p-value is great than .05 we can not conlcude that less than​ 25% of adults smoke.

Math   Statistics-And-Probability   
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