Population Distribution for Time spent on hold Value of density curve 0.00 0.02 0.04 0.06 0.08 0.10 10 15 20 25 30 Time Spent on hold (hours) a) Is the population normally distributed? Explain. (2 marks) b) If you randomly pick twenty-five customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape. (3 marks) c) If you randomly pick one hundred customers, describe the sampling distribution of the average time spent in the store; provide the mean, standard deviation, and shape. (3 marks) d) If you randomly pick one-hundred customers, find the probability that the average time spent on hold is within 1 hour of the population mean. (4 marks)