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The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (c) below. 76 65 569 82 67 15 12 23 23 128 130 68 57 75 99 120 46 96 35 25 159 42 8 201 70 55 65 25 45 20 141 115 ឆាំ្ន 27 157 340 86 52 199 82 139 409 (Type an integer or a decimal. Round to one decimal place as needed.) The population variance is o² = (Round to the nearest integer as needed.) NOTE: To calculate the variance, do not round standard deviation value. This is to avoid the rounding error. The population standard deviation is 6 = (Type an integer or a decimal. Round to one decimal place as needed.) b. What percentage of the 50 regions have stores within ±1, +2, or £3 standard deviations of the mean? % The percentage within ±1 standard deviation of the mean is (Type an integer or a decimal. Do not round.) The percentage within 12 standard deviations of the mean is (Type an integer or a decimal. Do not round.) %. The percentage within 13 standard deviations of the mean is%. (Type an integer or a decimal. Do not round.) 84 42 230 39 c. Compare your findings in part (b) with what would be expected on the basis of the empirical rule. Are you surprised at the results in part (b)? OA. No, because the percentage values are close to those predicted by the empirical rule. OB. Yes, because a much lower percentage of regions are within +1 standard deviation of the mean than would be expected on the basis of the empirical rule. OC. Yes, because a much higher percentage of regions are within +1 standard deviation of the mean than would be expected on the basis of the empirical rule. OD. Yes, because all the data are within #2 standard deviations of the mean. 309 33 38 22 104

The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (c) below. 76 65 569 82 67 15 12 23 23 128 130 68 57 75 99 120 46 96 35 25 159 42 8 201 70 55 65 25 45 20 141 115 ឆាំ្ន 27 157 340 86 52 199 82 139 409 (Type an integer or a decimal. Round to one decimal place as needed.) The population variance is o² = (Round to the nearest integer as needed.) NOTE: To calculate the variance, do not round standard deviation value. This is to avoid the rounding error. The population standard deviation is 6 = (Type an integer or a decimal. Round to one decimal place as needed.) b. What percentage of the 50 regions have stores within ±1, +2, or £3 standard deviations of the mean? % The percentage within ±1 standard deviation of the mean is (Type an integer or a decimal. Do not round.) The percentage within 12 standard deviations of the mean is (Type an integer or a decimal. Do not round.) %. The percentage within 13 standard deviations of the mean is%. (Type an integer or a decimal. Do not round.) 84 42 230 39 c. Compare your findings in part (b) with what would be expected on the basis of the empirical rule. Are you surprised at the results in part (b)? OA. No, because the percentage values are close to those predicted by the empirical rule. OB. Yes, because a much lower percentage of regions are within +1 standard deviation of the mean than would be expected on the basis of the empirical rule. OC. Yes, because a much higher percentage of regions are within +1 standard deviation of the mean than would be expected on the basis of the empirical rule. OD. Yes, because all the data are within #2 standard deviations of the mean. 309 33 38 22 104

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (c) below. 23 12 65 76 82 569 67 84 128 27 130 57 68 42 99 157 46 25 96 230 159 340 8 55 201 39 65 86 45 141 20 23 120 42 25 52 199 82 139 409 ANSCHEN (Type an integer or a decimal. Round to one decimal place as needed.) The population variance is o² = . (Round to the nearest integer as needed.) NOTE: To calculate the variance, do not round standard deviation value. This is to avoid the rounding error. 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, +2, or £3 standard deviations of the mean? The percentage within ±1 standard deviation of the mean is % (Type an integer or a decimal. Do not round.) The percentage within ±2 standard deviations of the mean is (Type an integer or a decimal. Do not round.) %. The percentage within 13 standard deviations of the mean is% (Type an integer or a decimal. Do not round.) 洲的05 15 75 35 70 115 c. Compare your findings in part (b) with what would be expected on the basis of the empirical rule. Are you surprised at the results in part (b)? OA. No, because the percentage values are close to those predicted by the empirical rule. OB. Yes, because a much lower percentage of regions are within + 1 standard deviation of the mean than would be expected on the basis of the empirical rule. OC. Yes, because a much higher percentage of regions are within +1 standard deviation of the mean than would be expected on the basis of the empirical rule. OD. Yes, because all the data are within 2 standard deviations of the mean. 309 E 33 38 22 104
Transcribed Image Text:The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (c) below. 23 12 65 76 82 569 67 84 128 27 130 57 68 42 99 157 46 25 96 230 159 340 8 55 201 39 65 86 45 141 20 23 120 42 25 52 199 82 139 409 ANSCHEN (Type an integer or a decimal. Round to one decimal place as needed.) The population variance is o² = . (Round to the nearest integer as needed.) NOTE: To calculate the variance, do not round standard deviation value. This is to avoid the rounding error. 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, +2, or £3 standard deviations of the mean? The percentage within ±1 standard deviation of the mean is % (Type an integer or a decimal. Do not round.) The percentage within ±2 standard deviations of the mean is (Type an integer or a decimal. Do not round.) %. The percentage within 13 standard deviations of the mean is% (Type an integer or a decimal. Do not round.) 洲的05 15 75 35 70 115 c. Compare your findings in part (b) with what would be expected on the basis of the empirical rule. Are you surprised at the results in part (b)? OA. No, because the percentage values are close to those predicted by the empirical rule. OB. Yes, because a much lower percentage of regions are within + 1 standard deviation of the mean than would be expected on the basis of the empirical rule. OC. Yes, because a much higher percentage of regions are within +1 standard deviation of the mean than would be expected on the basis of the empirical rule. OD. Yes, because all the data are within 2 standard deviations of the mean. 309 E 33 38 22 104
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