Sampling distribution for sample mean

Arial BIUA E E . 1 1 . . . 1 . . 2 . 4 1. The distribution of wait times for dinner on a Friday night at a popular Italian restaurant is skewed right with a mean 47 minutes and a standard deviation 22 minutes. A random sample of 50 customers wait times are selected. (a) What is the mean and standard deviation for the sample size of 50? (b) If a random sample of 50 customers is chosen, what is the probability of waiting less than 42 minutes? (c) If a random sample of 50 customers is chosen, what is the probability of waiting more than 54 minutes? (d) If a random sample of 50 customers is chosen, what is the probability of waiting between 43 and 51 minutes