how do i answer these
The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (c) below. 64 24 79 51 566 81 128 25 27 194 127 69 100 1 15 155 80 49 96 159 45 342 139 7 205 69 23 89 405 44 16 a. Compute the mean, variance, and standard deviation for this population. The population mean is p = D. (Type an integer or a decimal. Round to one decimal place as needed.) The population variance is 0'2 = D. (Round to the nearest integer as needed.) 67 56 30 57 140 20 77 34 68 11 1 13 81 45 233 35 NOTE: To calculate the variance, do not round standard deviation value. This is to avoid the rounding error. The population standard deviation is a = E. (Type an integer or a decimal. Round to one decimal place as needed.) 305 D. 32 35 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. 64 24 79 51 566 81 67 20 13 305 C1- 128 25 27 194 127 69 56 77 B1 32 100 1 15 155 80 49 96 30 34 45 35 159 45 342 139 7 205 57 68 233 22 69 23 89 405 44 16 140 11 1 35 104 b. What percentage of the 50 regions have stores within 1 1, i 2, or :t 3 standard deviations of the mean? The percentage within :i: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 :t 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)? The table below shows the number of one company's stores located in each of 50 regions. Complete parts (a) through (c) below. 64 24 79 51 566 81 67 20 13 305 D 128 25 27 194 127 69 56 77 81 32 1 00 1 1 5 1 55 80 49 96 30 34 45 35 159 45 342 139 7 205 57 68 233 22 69 23 B9 405 44 16 140 11 1 35 104 "' |_l (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)? Q) A. Yes, because all the data are within :l:2 standard deviations of the mean. 0 B. No, because the percentage values are close to those predicted by the empirical rule. O 0. 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. 0 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. Given population parameters for two populations, population 1 has a mean of 800 and a standard deviation equal to 20. Population 2 has a mean of 27,000 and a standard deviation equal to 2,000. Complete parts a and b below. a) Compute the coefficient of variation for each population. The coefficient of variation of population 1 is %. (Round to one decimal place as needed.)
