A study indicates that18- to24- year olds spend a mean of 120 minutes watching video on their smartphones per month. Assume that the amount of time watching video on a smartphone per month is normally distributed and that the standard deviation is 15 minutes. Complete parts(a) through(d) below.

What is the probability that an18- to24-year-old spends less than 95 minutes watching video on his or her smartphone permonth?

What is the probability that an18- to24-year-old spends between 95 and 130 minutes watching video on his or her smartphone permonth?

What is the probability that an18- to24-year-old spends more than 130 minutes watching video on his or her smartphone permonth?

One percent of all 18 to 24 - old will spend less than how many minutes watching video on his or her smartphone per month?