Question

A vaccine to prevent a severe virus was given to children within the first year of life as part of a drug study. The study reported that of the

3029 children randomly assigned the​ vaccine, 49 got the virus. Of the 1584 children randomly assigned the​ placebo, 43 got the virus.

a. Find the sample percentage of children who caught the virus in each group. Is the sample percentage lower for the vaccine​ group, as investigators​ hoped?

b. Determine whether the vaccine is effective in reducing the chance of catching the​ virus, using a significance level of

0.10

Find z test statistic and p-value

Answer 1

If you have any doubts with the solution feel free make a comment.. please rate positively it helps me a lot.. thank you...