State hypotheses for the significance test. Last year, the results of a survey at one college suggested that 28% of students smoked regularly. This year, after an intensive college-wide anti-smoking campaign, a researcher wishes to investigate whether the proportion of smokers has changed. Let p represent the p students who smoke regularly today. State hypotheses for a significance test, letting the alternative hypothesis reflect the possibility that the proportion of students who smoke today is different from the proportion last year. Ho: p= 28% Ha: p 28 % Ho:p> 28% Ha: p < 28% Ho: p= 28% H₂: p2 28% Ho: P * 28% H₂:p=28%

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8.

State hypotheses for the significance test.
Last year, the results of a survey at one college suggested that 28% of students smoked regularly. This year, after an intensive college-wide anti-smoking campaign, a researcher wishes to investigate whether the proportion of smokers has changed. Let p represent the proportion of
students who smoke regularly today. State hypotheses for a significance test, letting the alternative hypothesis reflect the possibility that the proportion of students who smoke today is different from the proportion last year.
Ho: p = 28%
Ha: p # 28%
Ho: p > 28%
Ha: p < 28%
Ho: p = 28%
Ha: p≥ 28%
Ho: p # 28%
Ha: p = 28%
Transcribed Image Text:State hypotheses for the significance test. Last year, the results of a survey at one college suggested that 28% of students smoked regularly. This year, after an intensive college-wide anti-smoking campaign, a researcher wishes to investigate whether the proportion of smokers has changed. Let p represent the proportion of students who smoke regularly today. State hypotheses for a significance test, letting the alternative hypothesis reflect the possibility that the proportion of students who smoke today is different from the proportion last year. Ho: p = 28% Ha: p # 28% Ho: p > 28% Ha: p < 28% Ho: p = 28% Ha: p≥ 28% Ho: p # 28% Ha: p = 28%
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