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Statistics)) 1.The Round-trip-time between the college and home for a student is normally distributed with a mean...

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Statistics

Statistics))

1.The Round-trip-time between the college and home for a studentis normally distributed with a mean of 47 min and a standarddeviation of 4.6 min. To one-decimal place, what Round-trip-timewould be considered the 70th percentile? Make sure to includeunits.

2.A recent study showed that the average amount of time spentdoing part time job by students at a college is 29 hours per weekwith a standard deviation of 3.8 hours. If 64 students wereselected at random, what is the probability that their averageweekly working hours will be less than 20 hours?Round answer to twodecimals, if necessary.Express answer in percent. Don't forget toput % sign with you answer.

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Solution1 Given thatmean 47standard deviation    See Answer
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