Test score from mr Moore’s 5th period class are given below 91 48 86 73 86 49 77 86 64 78 64 82 72 68 82 which of the following histrogram correctly displays this data?

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?