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 3294 children randomly assigned the​ vaccine, 57 got the virus. Of the 1648 children randomly assigned the​ placebo, 49 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 0.01 The first few steps of the​ hypothesis-testing procedure are given. Complete the procedure.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.