A medical research team conducted a study to test the effect of a migraine drug. Of the 400 subjects who took the drug, 100 were pain free after two hours. Of the 407 subjects that took a placebo, 40 were pain free after two hours. Can you reject the claim that the proportion of subjects who are pain-free is the same for the two groups? Use the appropriate hypothesis test at the 2% significance level. Be sure to use the p-value to make your conclusion

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A: Answer  Given  Sample proportion [p1] =0.886 Sample proportion [p2] =0.935 sample size [n1] =500…

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Q: shorter than 60 hours

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Q: A poll was conducted to investigate opinions about global warming. The respondents who answered yes…

A: In this context, the aim is to test whether the sex of the respondent is independent of the choice…

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Q: Identify the null and alternative hypotheses. The sex of the respondent Ho H₁: The sex of the…

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Q: A poll was conducted to investigate opinions about global warming. The respondents who answered yes…

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A: Df = (2-1)(3-1) = 2 using excel function, CHISQ.INV.RT(0.05,2), critical value = 5.991 Since, test…

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A: Given: n= 250.0 ,x= 97.0 p= 0.35 ,significance level(∝)= 0.05p̂= 97.0 / 250.0 =0.388

Q: A television executive claims that the percent of households that watch the Macy's parade on…

A:

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Q: In a clinical trial of a drug intended to help people stop​ smoking, 131 subjects were treated with…

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Q: 19% of deaths among male adults can be attributed to heart diseases. Is this percentage different…

A: Solution: It is given that 19% of deaths among male students can be attributed to heart diseases.

Q: The drug OxyContin (oxycodone) is used to treat pain, but it is dangerous because it is addictive…

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Q: A manufacturer claims him market share is 60%. However a random sample of 500 clients show that only…

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Q: In an experiment, 11% of 734 subjects treated with viagra experienced headaches. In the same…

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Q: A poll surveyed 503 video gamers, and 106 of them said they prefer playing games on a console rather…

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Q: According to a survey conducted by the Association for Dressings and Sauces, 20% of American adults…

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Q: A poli was conducted to investigate opinions about global warming. The respondents who answered yes…

A:

Q: Test the hypothesis that a majority (more than 50%) believe the rich should pay more taxes than they…

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Q: A nutrition expert claims that the average American is overweight: To test his claim, a random…

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Q: Below indicate whether the appropriate test would be an independent t-test, dependent t-test,…

A: