Question: The times per week a student uses a lab computer are normally distributed, with a mean of 6.1hours and a standard deviation of 1.5hours. A

The times per week a student uses a lab computer are normally distributed, with a mean of 6.1hours and a standard deviation of 1.5hours. A student is randomly selected. Find the following probabilities.

(a) Find the probability that the student uses a lab computer less than 4hours per week.

(b) Find the probability that the student uses a lab computer between 7and 8hours per week.

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