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3- One year, the scores for the eight initial games of the National Basketball Association playoffs were 111-106, 10492, 116105, 119113, 109-102, Ill97 113-96, 10189 Find the sample variance for the score of the winning team. 4. Loss of calcium is a serious problem for older women. At the beginning of a study on the inuence of exercise on the rate of loss, the amounts of bone mineral content in the radius bone of the dominant hand of seven elderly women were .90, 1.06, 1.06, .79, .35, .91, .96 Calculate (a) The sample variance (b) The sample standard deviation 5. On opening day one season, 10 major league baseball games were played and they lasted the following numbers of minutes. 167, 211, 187, 176, 170, 158, 198, 218, 145, 232 Find the sample median. 6' If you were to use the data on the length of major league baseball games in Exercise 4.15 to estimate the total amount of videotape needed to lm 10 major league baseball games, which is the more meaningful descrip- tion, the sample mean or the sample median? Explain. (Exercise 4.15 refers to the above problem 5.)