3.4.42-T The data to the right contain the per-capita energy consumption, in kil

Question

3.4.42-T The data to the right contain the per-capita energy consumption, in kilowatt-hours, for each of the 21,260 15,769 2,386 10,414 20 provinces of a nation Complete parts (a) through (d) below 21,143 15,266 11,827 9,755 18,650 15,249 11,791 7,365 18,059 15,191 11,630 6,093 15,843 13,588 10,486 3,935 A. Not all of the values are close to those predicted by the empirical rule. Therefore, the data are left-skewed. The values are very dfferent from those predicted by the empirical rule. Therefore, the data must be heavily skewed. Not all ofthe values are dose to those predicted by the empirical rule. Therefore, the data are right-skewed. B. c *D The values are close to those predicted by the empirical rde. d. Repeat (a) through (c) with the value 13,588 removed. How have the results changed? The population mean is p13269.05 (Round to two decimal places as needed.) The population variance is 21667532 (Round to the nearest integer as needed.) The population standard deviation is = 4655 (Round to the nearest integer as needed.) The actual percentago within ± 1 standard deviation of the mean is Round to one decimal place as needed.) Enter your answer in the answer box and then click Check Answer Clear All Final Chock 20 -1 2 3 5 9

Explanation / Answer

D) mean +/-1 SD = 13269.05 +/- 4655 =8614.05, 17924.05

Percentage = 12/19 * 100 = 63.16%

mean +/- 2SD = 13269.05 +/- 2 * 4655 =3959.05, 22579.05

Percentage = 16/19 * 100 =84.21%

mean +/- 3SD = 13269.05 +/- 3 * 4655 = -695.95, 27234.05

Percentage = 19/19 * 100 = 100%

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