A group of doctors is deciding whether or not to perform an operation.  Suppose the null hypothesis is that the surgical procedure will go well.  Choose the statement that corresponds to a Type I error.   Group of answer choices To conclude that the surgical procedure WILL go well, when in fact, it would NOT go well. To conclude that the surgical procedure will NOT go well. To conclude that the surgical procedure will go well. To conclude that the surgical procedure will NOT go well when in fact it WOULD go well.

Select the correct null hypothesis, H0, and alternative hypothesis, Ha, in symbolic form. A chain of stores specializing in camping gear is considering a promotion that involves mailing out discount coupons. To test this promotion, the chain will first mail discount coupons to residents in a certain area and study the proportion of coupoons that will actually be used. The chain wants to know if the proportion is less than 15% A. H0:μ≤0.15,  Ha:μ>0.15B. H0:p=0.15,   Ha:p≠0.15C. H0:p≥0.15,   Ha:p<0.15D. H0:p>0.15,   Ha:p≤0.15E. H0:μ≤15,    Ha:μ>15F. H0:p≤0.15,  Ha:p>0.15

A researcher is interested in whether people are more or less likely to enjoy popcorn when they are watching TV versus watching a movie. The researcher recruits 12 participants and randomly assigns them to eat popcorn either while watching T or while watching a movie. Then, the researcher measures now much each participant enjoyed the popcorn on a scale from 1 to 10. The researchers' results are shown below: Using the appropriate hypothesis test and the six steps of hypothesis testing, see what the researcher should conclude about the effect of watching television versus watching a movie on people's enjoyment of popcorn. Construct a sampling distribution of means representing the null hypothesis. Specify the sampling distribution's mean and standard error 5. Using a two-tailed alpha of .05 (a = .05), determine the critical values 6. Calculate the test statistic 7. State whether you reject or fail to reject the null hypothesis 8. Calculate and report a measure of effect size . 9. Based…

Suppose that 70% of all Americans agree that a candidate is not trustworthy. A survey finds the 116 out of 200 agree that a candidate is not trustworthy. How likely is the result above to happen, if the sample is representative of the population? Choose the best answer.     It is very likely       It is somewhat likely       It is unlikely       It is very unlikely