In each of the following exercises, use the ten-step hypothesis testing procedure. For each exercise, as appropriate, explain why you chose a one-sided test or a two-sided test. Discuss how you think researchers or clinicians might use the results of your hypothesis test. What clinical or research decisions or actions do you think would be appropriate in light of the results of your test? 7.6.1 Ho et al. (A-22) used telephone interviews of randomly selected respondents in Hong Kong to obtain information regarding individuals' perceptions of health and smoking history. Among 1222 current male smokers, 72 reported that they had "poor" or "very poor" health, while 30 among 282 former male smokers reported that they had "poor" or "very poor" health. Is this sufficient evidence to allow one to conclude that among

Food inspectors inspect samples of food products to see if they are safe. This can be thought of as a hypothesis test where Ho: the food is safe, and H1: the food is not safe. If you are a consumer, which type of error would be the worst one for the inspector to make, the type I or type Il error?

According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher believes that the proportion of college students who watch TV nightly is less than this. To test this claim the research samples 400 college students and finds that 276 watch TV nightly. At the 0.05 level of significance does this data provide evidence to suggest that the proportion of college students who watch TV nightly is less than 70%? Select the correct conclusion for the hypothesis test:   Question 12 options:   Fail to reject the null hypothesis because the p-value is less than the level of significance.   Fail to reject the null hypothesis because the p-value is greater than the level of significance.   Reject the null hypothesis because the p-value is less than the level of significance.   Reject the null because the p-value is greater than the level of significance.

Suppose that you are to conduct the following hypothesis test: Ho: p 20.53 H: P < 0.53 A sample of size 145 yielded a sample proportion of 0.4463. Determine each of the following: A. The value of the test statistic: B. The p-value is approximately

A health provider saw that 48% of their members received their flu shot in recent years. The health care provider tried a new advertising strategy the following year, and they took a sample of members to test if the proportion who received their flu shot had changed.   Determine the null and alternative hypothesis

In 1948, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do you on occasion​ consume, alcoholic​ beverages?" Of the 1100 adults​ surveyed, 429 indicated that they were total abstainers. In a recent​ survey, the same question was asked of 1100 adults and 363 indicated that they were total abstainers. Determine the​ P-value for this hypothesis test.

An academic tutor wants to assess whether her remedial tutoring has been effective for her five students. Using a pre-post design, she records the following grades for a group of students prior to and after receiving her tutoring. Using an alpha of .05 and a two-tailed test complete all 4 steps of hypothesis testing to see if the remedial tutoring was effective. Before  2.4                  After 3.0              2.5                           2.8              3.0                           3.5              2.9                           3.1               2.7                          3.5        M=  2.7                        M=3.8

Create a research hypothesis that would be answered using either a z- or a t- test. Include the following: Introduction: Brief description of the study including the purpose and importance of the research question being asked. What is the null hypothesis? What is the research hypothesis? Participants/Sampling Method: Describe your sampling method. What is your sample size? Who is your population of interest? How representative is the sample of the population under study? Data Analysis: Describe the statistical analysis. What is your variable? What is its level of measurement? What is your alpha level? Results & Discussion: Did you reject the null hypothesis? What information did you use to lead you to your conclusion? Was your p value greater than or less than your alpha? NOTE: You can just make up numbers, but include your made-up p value

What is the alternative hypothesis? And what would be the appropriate decision/conclusion?

Consider the hypothesis test below.     The following results are for independent samples taken from the two populations. Sample 1 Sample 2 n1=200 n2=300 pbar1=.25 pbar2=.17 Use pooled estimator of p.a. What is the value of the test statistic (to 2 decimals)?b. What is the p-value (to 4 decimals)?c. With a=.05  , what is your hypothesis testing conclusion?- Select your answer - Conclude the difference between the proportions is greater than 0 Cannot conclude the difference between the proportions is greater than 0   Icon Key    Question 7 of 10  Exercise 10.29 (Self-Test) Algorithmic