Researchers selected 894 patients at random among those who take a certain widely-used prescription drug daily. In a clinical trial, 24 out of the 894 patients complained of flulike symptoms. Suppose that it is known th 2.4% of patients taking competing drugs complain of flulike symptoms. Is there sufficient evidence to conclude that more than 2.4% of this drug's users experience flulike symptoms as a side effect at the a= 0.01 level a significance? Because npo (1-Po) = satisfied. (Round to one decimal place as needed.) 10, the sample size is CC 5% of the population size, and the patients in the sample selected at random, all of the requirements for testing the hypothesis ▼

In a random sample of​ males, it was found that 23 write with their left hands and 225 do not. In a random sample of​ females, it was found that 59 write with their left hands and 470 do not. Use a 0.05 significance level to test the claim that the rate of​ left-handedness among males is less than that among females.

In a study of 420,056 cell phone​ users, 100 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that such cancers are affected by cell phone use. That​ is, test the claim that cell phone users develop cancer of the brain or nervous system at a rate that is different from the rate of​ 0.0340% for people who do not use cell phones. Because this issue has such great​ importance, use a 0.005 significance level. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method and the normal distribution as an approximation to the binomial distribution.

Are couples that live together before they get married more likely to end up divorced within five years of marriage compared to couples that live apart before they get married? 217 of the 671 couples from the study who lived together before they got married were divorced within five years of marriage. 132 of the 421 couples from the study who lived apart before they got married were divorced within five years of marriage. What can be concluded at the  = 0.10 level of significance? For this study, we should use        The null and alternative hypotheses would be:                                            The test statistic     =  (please show your answer to 3 decimal places.) The p-value =  (Please show your answer to 4 decimal places.) The p-value is      Based on this, we should      the null hypothesis. Thus, the final conclusion is that ... The results are statistically insignificant at αα = 0.10, so there is statistically significant evidence to conclude that the divorce rate…

Researchers selected 848 patients at random among those who take a certain widely-used prescription drug daily. In a clinical trial, 18 out of the 848 patients complained of flulike symptoms. Suppose that it is known that 1.6% of patients taking competing drugs complain of flulike symptoms. Is there sufficient evidence to conclude that more than 1.6% of this drug's users experience flulike symptoms as a side effect at the a = 0.01 level of significance? ... 10, the sample size is Because npo (1-Po) = population size, and the patients in the sample requirements for testing the hypothesis (Round to one decimal place as needed.) satisfied. 5% of the selected at random, all of the

In 2015, a survey found that 38% of Americans were supportive of online education for elementary and secondary education. With the increase in contagious viruses, it is of interest if this proportion has changed. In a 2019 poll, 51% of 1028 Americans were supportive of online education for elementary and secondary education. At the 10% significance level, do the data provide sufficient evidence to conclude that the percentage of all American adults who support online education for elementary and secondary education has changed from what was believed in 2015? Choose the choice that gives the null and alternative hypothesis.

The Substance Abuse and Mental Health Services Administration (SAMHSA, 2017) estimates that 10.9% of the population of the United States age 18–24 had an episode of depression in the previous 12 months. Suppose a researcher takes a random sample of 225 United States adults aged 18–24. Determine the value of the sample proportion, p, such that 5% of samples of 225 United States adults age 18–24 are greater than p. You may find software or a z-table useful. Give your answer precise to three decimal places. p = II

A study was conducted to examine the effects of yoga on feelings of anxiety and stress among 200 college students. 100 students were randomized to participate in daily yoga exercises in the morning, while the remaining 100 students were attended a wellness course that described the benefits of yoga and exercise on one's health. At the end of the study, it was determined that those who participated in daily yoga exercises had fewer symptoms of anxiety and stress compared to those who attended the wellness course. la. What is the study design that the investigators used? a. Case report b. Case series c. Ecological Study d. Cross-sectional (descriptive) e. Cross-sectional (analytic) f. Case-control study g. Retrospective cohort study h. Prospective cohort study i. Randomized clinical trial Ib-Would blinding have been feasible for this study? If yes, who could have been blinded? Circle all that apply. a. Subjects/Students b. Investigators c. Data analysts