021 Test 1 Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data. Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? 39 37 36 30 22 20 18 15 5 14.6 14.0 The range of the sample data is $ million. (Type an integer or a decimal.) The variance of the sample data is (Round to two decimal places as needed.) The standard deviation of the sample data is $ million. (Round to two decimal places as needed.) Is the standard deviation of the sample a good estimate of the variation of salaries of TV personalities in general? A. Yes, because the standard deviation is an unbiased estimator. O B. Yes, because the sample is random. C. No, because the sample is not representative of the whole population. D. No, because there is an outlier in the sample data. 7. Find the standard deviation, s, of sample data summarized in the frequency distribution table given below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 9.0. S = [E (x) ] -[E(.x )] n(n - 1) Interval 20-29 30-39 40-49 50-59 60-69 70-79 Frequency 5 17 45 21 10 4 Standard deviation = (Round to one decimal place as needed.) Consider a difference of 20% between two values of a standard deviation to be significant. How does this computed value compare with the given standard deviation, 9.0? A. The computed value is not significantly different from the given value. OB. The computed value is significantly less than the given value. O C. The computed value is significantly greater than the given value. 8. The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98.17 F and a standard deviation of 0.41 F. Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of healthy adults with body temperatures within 2 standard deviations of the mean, or between 97.35 F and 98.99 F? b. What is the approximate percentage of healthy adults with body temperatures between 96.94 F and 99.40 F? a. Approximately % of healthy adults in this group have body temperatures within 2 standard deviations of the mean, or between 97.35 F and 98.99 F. (Type an integer or a decimal. Do not round.) b. Approximately % of healthy adults in this group have body temperatures between 96.94 F and 99.40F. (Type an integer or a decimal. Do not round.)