Question: 16 A variable of two populations has a mean of 7.9 and a standard deviation of 5.4 for one of the populations and a mean of 7.1 and a standards deviation of 4.6 for the other population.

a. For independent samples of sizes 3 and 6, respectively, find the mean and standard deviation of.

b. Must the variable under consideration be normally distributed on each of the two populations for your answer part (a)? Explain your answer.

c. Can you conclude that the variable is normally distributed? Explain your Answer.