The average number of hours that a student work clocks per week is 9 hours with a standard deviation of 3 hours. The number of hours worked by student workers is known to be left skewed. If a sample of 90 student workers is taken, the average of their number of hours worked would be . ? Select one: a. Left skewed with mean 9 hours and standard deviation 3 hours. b. Normal with mean 9 hours and standard deviation 0.32 hours. c. Left skewed with mean 9 hours and standard deviation 0.32 hours. d. Right skewed with mean 9 hours and standard deviation 0.32 hours. e. Normal with mean 9 hours and standard deviation 3 hours. Based on my experience I am assuming that the answer is a normal distribution but I don't know the meaning behind it being normal