The back to back stem and leaf plot below shows the ages of patients seen by two doctors in a family clinic in one day. compare the ages of the patience of chapter 1 in doctor to using the mean and median each data set.

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?