For the following questions, determine whether to use a parametric or non-parametric test (look at assumptions or test for normality). Perform the hypothesis testing in R and write down the results and the R commands you used. Draw the distribution with the critical values. Where needed perform tests at=0.05. Make conclusions using both the p-value and test statistic.Underline your answers.

D)You are asked to compare the average wing size (in cm) of two groups ofDrosophila melanogaster. The first group consists ofDrosophilafrom brazil; the second group is North AmericaDrosophila. The data are given below.

Brazilian = 18, 22, 21, 17, 20, 17, 23, 20, 22 ,21

North America = 16, 17, 14, 21, 19, 18, 13, 15, 17, 21

-First state the null and alternative hypothesis.

Ho:

Ha:

-Is the wing size equal in both groups (assume the datais normally distributed and the variances are equal)?

-Is the wing size equal in both groups (assume the datais not normally distributed)?