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a, What range of time spent doing homework contains the 68% closest to the mean? b. How much time spent on homework would you expect from the 2.5% of the students with the least time spent on homework? c. Jeffery studied 25 min last night. What percent of the students studied fewer minutes than Jeffery? Round to the nearest hundredth. 8. A random sample of attendance numbers for last year's soccer matches for a local team are shown. 678 698 746 748 832 686 693 787 828 639 812 734 754 808 648 a. Find the mean and standard deviation of the attendance numbers to the nearest tenth. b. Use the data given in the problem to find what percent of last year's games had at least 808 people in attendance. Round to the nearest tenth of a percent. c. Given that the data Is normally distributed, estimate the percent of games that will have at least 808 people in attendance. 9. A normally distributed data set has a mean of 35 and a standard deviation of 5.23, Complete the table to find the probability that a randomly selected value is in the given interval. Round to the nearest hundredth percent, if necessary. Interval Probability At most 43 At least 48 Between 32 and 38