Answer Happy

A new post-surgical treatment is being compared with a standard treatment. Seven subjects receive the new treatment, while seven others (the controls) receive the standard treatment. The recovery times (in days) are given below. treatment control 12 13 15 19 18 23 24 30 32 35 20 21 24 39 Do the data suggest that the average recovery time for the new treatment is shorter than that for the standard treatment by more than 2 days? (You may assume that the two populations have equal variance.) a) Write down the null and alternative hypotheses b) Write down the value of the test statistic c) Calculate the p-value of the test d) Does the new treatment shorten the average recovery time by more than 2 days when compared to the standard treatment? What is your conclusion at 1% level of significance