Show transcribed image text (1 point) A variable of two populations has a mean of 50 and a standard deviation of 10 for one of the populations and a mean of 53 and a standard deviation of 12 for the other population. a) For independent samples of sizes 49 and 54, respectively, find the mean and standard deviation of Z1-12- mean. standard deviation b) Can you conclude that the variable 1 2 is approximately normally distributed? (Answer yes or no) answer.

(1 point) A variable of two populations has a mean of 50 and a standard deviation of 10 for one of the populations and a mean of 53 and a standard deviation of 12 for the other population. a) For independent samples of sizes 49 and 54, respectively, find the mean and standard deviation of Z1-12- mean. standard deviation b) Can you conclude that the variable 1 2 is approximately normally distributed? (Answer yes or no) answer.