13. Given the data set 3, 5, 4, 2, 5, 3, 4, 2, use your calculator to find the mean, median, mode, midrange, range, standard deviation, and variance. 14. A data set of Blood Platelet counts of women have a bell-shaped distribution with at mean of 255.1 and a standard deviation of 65.4. Using the Empirical rule, a) what is the approximate percentage of women with platelet counts between 124.3 and 385.9 b) What are the Minimum and Maximum platelet counts that include 68% of women? 15. The ACT test is used to access readiness for college. In a recent year, the mean ACT score was 21.1 and the standard deviation is 5.2. a) Identify the values of the ACT test that are significantly low. b ) Identify the values of the ACT test that are significantly high. c) Identify the values of the ACT test that are neither significantly low nor significantly high. 16. Find the standard deviation of the following data by first completing the table and then using the information obtained along with the formula, s = E(x-$)2 n-1 , to find the standard deviation. ( x - x ) 2 72 56 68 43 52 Total: Now use the formula to evaluate s. 17. The following frequency distribution table show the Daily commute times in Los Angeles , CA (in minutes) Complete the table shown and then use the information obtained along with the following formula, s = EU ( x-x) 21 En -1 to evaluate the standard deviation and variance of the data. Daily Commute Frequency Midpoints x - x (x - x) 2 f( x - xx) 2 Times (minutes) 0-14 6 15-29 18 30-44 14