i chrome File Edit View History Bookmarks Profiles Tab Window Help 0 1r m: '8 Q 2 MonFeb710138AM 'P Do Homework 7 Mod X s at 1 1' . mm ,4 H 6 C' mathxl.com Apps RI Welcome | my.ry e MHR TE 6 Macro TB S S MLSE form QMSZlO-WINTER 2022 Speros Merekoulias O2/07/2210:38 AM Homework' Module 2-Measures of Central . . HW Score: 0%. 0 of 27 points : ' . . uestlon 9. Instructor-created uestlon . Tendency and Varrabrl Q q 0 Palms: 0 of 1 M The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (0) below. 65 23 75 50 567 82 69 20 10 308 g 0 128 23 30 199 122 65 55 79 83 32 95 116 159 83 47 96 26 32 42 40 .l' 157 40 341 136 6 204 55 68 234 21 67 22 88 410 40 15 141 114 35 104 A a. Compute the mean, variance, and standard deviation for this population. The population mean is p= . (Type an integer or a decimal. Round to one decimal place as needed.) The population variance is 2 = . (Round to the nearest integer as needed.) NOTE: To calculate the variance, do not round standard deviation value. This is to avoid the rounding en'or. - The population standard deviation is o = . - (Type an integer or a decimal. Round to one decimal place as needed.) n all b. What percentage of the 50 regions have stores within 11, :2, or 1: 3 standard deviations of the mean? The percentage within 1 1 standard deviation of the mean is %. .' (Type an integer or a decimal. Do not round.) The percentage within 1 2 standard deviations of the mean is %. .3; (Type an integer or a decimal. Do not round.) M The percentage within 1 3 standard deviations of the mean is %. i chrome File Edit View History Bookmarks Profiles Tab Window Help 0 1r m: '8 Q 2 MonFeb710138AM 'P De Homework , Mod X s w 'r r: . mm ,4 H 6 C' mathxl.com Apps RI Welcome | my.ry e MHR TE 6 Macro TB S S MLSE form QMSZ10-WINTER 2022 Speros Merekoulias O2/07/2210:38 AM Homework' Module 2-Measures of Central . . HW Score: 0%. 0 of 27 points : ' . . uestlon 9, Instructor-created uestlon . Tendency and Varrabrl Q q 0 Palms: 0 0i 1 M The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (0) below. 65 23 75 50 567 82 69 20 10 308 g 0 128 23 30 199 122 65 55 79 83 32 95 116 159 83 47 96 26 32 42 40 .l' 157 40 341 136 6 204 55 68 234 21 67 22 88 410 40 15 141 114 35 104 A The population standard deviation is o = . (Type an integer or a decimal. Round to one decimal place as needed.) b. What percentage of the 50 regions have stores within 1 1, 12, or i 3 standard deviations of the mean? The percentage within 4: 1 standard deviation of the mean is %. (Type an integer or a decimal. Do not roundt) The percentage within :1: 2 standard deviations of the mean is \"In. (Type an integer or a decimal. Do not round.) The percentage within 1 3 standard deviations of the mean is %. (Type an integer or a decimal. Do not round.) c. Compare your ndings in part (b) with what would be expected on the basis of the empirical rule. Are you surprised at the results in part (b)? .1 O A. No. because the percentage values are close to those predicted by the empirical rule. 0 3. Yes, because a much lower percentage of regions are within 1: 1 standard deviation of the mean than would be expected on the basis of the empirical rule. .4. O c. Yes, because all the data are within 1: 2 standard deviations of the mean. a? O D. Yes, because a much higher percentage of regions are within t 1 standard deviation of the mean than would be expected on the basis of the empirical rule