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The times that college students spend studying per week have a distribution that is skewed to the right with a mean of 8.4 hours and

The times that college students spend studying per week have a

distribution that is skewed to the right with a mean of 8.4 hours and a standard

deviation of 2.7 hours. Find the probability that the mean time spent studying per

week for a random sample of 45 students would be

a) between 8 and 9 hours,

b) less than 8 hours

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