Q2. The times that NSU students spend studying per week have a distribution that is skewed to the right with a mean of 6.8 hours and a standard deviation of 1.9 hours. a) Calculate the mean and standard deviation of y when the sample size is i. 25 ii. 45 b) Find the probability that the mean time spent studying per week for a random sample of 45 students would be between 5 5 and 10.5 hours indicating the scaling and label of both axes