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The times per week a student uses a lab computer are normally distributed,

The times per week a student uses a lab computer are normally distributed, with a mean of 6.3 hours and a standard

deviation of 1.3 hours. A student is randomly selected. Find the following probabilities.

A) Find the probability that the student uses a lab computer less than 5 hours per week

B)Find the probability that the student uses a lab computer between 6 and 8 hours per week

C) Find the probability that the student uses a lab computer more than 9 hours per week

 
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