In a poll of 1084 adults, it was found that 22% smoked cigarettes in the past week. Use 0.05...

Question

In a poll of 1084 adults, it was found that 22% smoked cigarettes in the past week. Use 0.05 nificance level to test claim that less than 25% of adults smoked within past week. What is the test statistic

David · Accepted Answer

This is a hypothesis testing for population proportion. 
22% of 1084 = 0.22 proportion 
25% of 1084 = 0.25 proportion 
It is to be tested that whether the proportion of smokers is less than 0.25 
Therefore, 
H0: p = 0.25 
H0: p

In a poll of 1084 adults, it was found that 22% smoked cigarettes in the past week. Use 0.05 nificance level to test claim that less than 25% of adults smoked within past week. What is the test...

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