Elsa works on commission selling cars. She needs to average a monthly paycheck of $2100 to pay all her bills. Her
paychecks so far for the year are shown below. If she makes
the same amount in June and July, how much will she need to
earn for her July paycheck to reach her average of $2100?

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?