The results of a trial involving an experimental vaccine for children are shown below. Vaccine treatment Placebo Developed flu Did not develop flu 70 95 392 451 a. State the relevant null and alternative hypotheses. b. Conduct the appropriate test and state a conclusion. Use a significance level of 0.05. a. Determine the null and alternative hypotheses. Choose the correct answer below. OA. Ho: Treatment method and flu development have equal proportions. HA: Treatment method and flu development have non-equal proportions. OB. Ho: There is a relationship between treatment method and development of flu. HA: Treatment method is independent of flu development. OC. Ho: Treatment method and flu development have non-equal proportions. HA: Treatment method and flu development have equal proportions. OD. Ho: Treatment method is independent of flu development. HA: There is a relationship between treatment method and development of flu.

Why early travel restrictions is important to prevent the spread of Covid-19 Pandemic?

You are testing the null hypothesis that there is no relationship between two variables, X and Y. From your sample of n = 20, you determine that SSR 80 and SSE 20. Complete parts (a) through (e) below. a. What is the value of FSTAT? State the hypotheses to test. Choose the correct answer below. OA H₂ B₁50 H₁ B₁>0 OC. H₂ B₁ = 0 H₁ B₁₁ =0 FSTAT 72 (Round to the nearest integer as needed.) b. At the a=0.05 level of significance, what is the critical value? The critical value is 4.41 (Round to two decimal places as needed.) c. Based on your answers to (a) and (b). what statistical decision should you make? OA. Reject Ho- There is no evidence that there is a relationship between X and Y. OB. Do not reject Ho. There is no evidence that there is a relationship between X and Y. OC. Do not reject Ho. There is evidence that there is a relationship between X and Y. D. Reject Ho. There is evidence that there is a relationship between X and Y. d. Compute the correlation coefficient by first…

Sampling and Nonsampling Risk. This module provided a detailed example of the use ofsampling to determine whether individuals could reduce their resting heart rates through anaerobic exercise program.Required:Indicate whether each of the following situations reflects sampling risk (S), nonsamplingrisk (NS), both sampling risk and nonsampling risk (B), or neither sampling risk nor nonsampling risk (N). a. The scale on the instrument used to measure heart rates is malfunctioning.b. At one location, you selected only members who participated in a more rigorous aerobicsprogram.c. At one location, your assistant inadvertently recorded measures immediately after theconclusion of an aerobics activity rather than after a five-minute rest period, as done inother locations.d. Attendance is not monitored at all of the exercise sessions.e. Your assistant makes an error in recording a number of measures.f. Your sample is comprised of a disproportionate number of club members over the age of 65.

Use the sample data and confidence level given below to complete parts (a) through (d). A drug is used to help prevent blood clots in cortain patients. In olinical trials, among 4202 patienta treated with the drug, 120 developed the adverse reaction of nausea. Construct a 96% confidence interval for the proportion of adverse reactions a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)

You are testing the null hypothesis that there is no relationship between two variables, X and Y. From your sample of n = 20, you determine that SSR = 80 and SSE 20. Complete parts (a) through (e) below. a. What is the value of FSTAT? State the hypotheses to test. Choose the correct answer below. OA H B₁50 H₁ B₁0 OC. Ho B₁ #0 H₁ = B₁ = 0 = 72 (Round to the nearest integer as needed) FSTAT = b. At the a=0.05 level of significance, what is the critical value? The critical value is 4.41 (Round to two decimal places as needed.) c. Based on your answers to (3) and (b), what statistical decision should you make? A. Reject H. There is no evidence that there is a relationship between X and Y. OB. Do not reject H. There is no evidence that there is a relationship between X and Y. OC. Do not reject H,. There is evidence that there is a relationship between X and Y D. Reject H. There is evidence that there is a relationship between X and Y. d. Compute the correlation coefficient by first…

Indicate whether each statement is true or false, and justify your answer.The results of any CEA analysis depend on the perspective taken, but analyses from the perspectives of the patient and a social planner will never differ.

The sample size of the test of controls varies directly with:   Expected Population Deviation Rate Tolerable Rate Risk of Assessing Control Risk Too Low A. Yes Yes No B. No No Yes C. Yes No No D. No Yes Yes E. Yes Yes Yes   A B C D E

Indicate whether the statement is true, false, or unclear, and justify your answer.On average, observed mortality rates are higher for people who buy life insurance than for people who do not. This is best taken as evidence in favor of adverse selection in life insurance markets.

what actions did MFIs take in reaction to the pandemic? How has Covid 19 impacted the sustainability of MFIs?