hours and a standard deviation of 0.8 hour. A student is randomly selected. he times per week a student uses a lab computer are normally distributed, with a mean of 5.4 (a) Find the probability that the student uses a lab computer less than 8 hours per week. (b) Find the probability that the student uses a lab computer between 3 and 6 hours per week. (c) Find the probability that the student uses a lab computer more than 4 hours per week.