​b) A pharmaceutical company wonders if its new drug has a cure rate different from the 58​% rate reported for the placebo.What are the null and alternative hypotheses for this test if we are testing the cure rate for the new​ drug?

Question 6 > Hypotheses and Conclusions: According to the Centers of Disease Control, about 20% of American young people between the ages of 12 and 19 are obese. A student claims that the students in his local schools are in better shape than the national average, so their proportion of obese students is less than 20%. a) Which are the appropriate null and alternative hypotheses for this study? O Ho: p = 20% HA: P = 20% O Ho: p = 20% HA: P 20% O Ho: P = 0 HA: P = 0 b)Suppose that the result of the statistical test is to Reject Ho. Which is the proper conclusion? O There is not sufficient evidence to support the claim that the students at his local schools have a smaller proportion of obese students. O There is sufficient evidence to support the claim that the students at his local schools have a smaller proportion of obese students. O There is not enough information to answer this question. O The test has proved that the students at his local schools have a smaller proportion of obese…

Are freshmen psychology majors just as likely to change their major before they graduate compared to freshmen business majors? 366 of the 673 freshmen psychology majors from a recent study changed their major before they graduated and 394 of the 705 freshmen business majors changed their major before they graduated. What can be concluded at the a = 0.10 level of significance? For this study, we should use z-test for the difference between two population proportions a. The null and alternative hypotheses would be: Ho: p1 p2 v (please enter a decimal) H1: p1 p2 (Please enter a decimal) b. The test statistic z v -0.508 X (please show your answer to 3 decimal places.) c. The p-value = 0.6115 X (Please show your answer to 4 decimal places.) d. The p-value is > vV a e. Based on this, we should fail to reject the null hypothesis. f. Thus, the final conclusion is that ... O The results are statistically significant at a = 0.10, so there is sufficient evidence to conclude that the proportion of…

What are the various Potential Problems with Quasi-Experiments?