The times that college students spend studying per week have a distribution skewed to the rightwith a mean of8.7

hours and a standard deviation of2.5

hours. Find the probability that the mean time spent studying per week for a random sample of55

college students would be

a.between8.0

and8.8

hours.

Round your answer to two decimal places.

P=

b.less than8.4

hours.

Round your answer to two decimal places.

P=