The PTA at Weston high school is having its annual dinner and auction to raise money for music and art programs last year the event raced $63,300 this year it raised 32% less how much was raised this year

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?