A professor used chi-square test to examine the relationship between smoking and colon cancer. He followed a total of 480 people and the result was listed below Colon No Colon Frequency Cancer Cancer Smokers 120 80 Non- smokers 25 255 At a significance level of 5%, can the professor conclude that smoking and having colon cancer are associated with each other? • Yes, because the null hypothesis will be rejected. O Yes, because the null hypothesis will not be rejeted. O No, because the null hypothesis will be rejected. O No, because the null hypothesis will not be rejeted.

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Q: What are the correct hypotheses? H0:                              H1:…

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A: 17% of all college students volunteer their time. Is the percentage of college students who are…

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Q: , what is the test statistic and p-value?

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A:

Q: Are freshmen psychology majors less likely to change their major before they graduate compared to…

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