3.28 and 3.30. not 3.29 on a Navy carrier. The actual average deployment is 6 mo

Question

3.28 and 3.30. not 3.29

on a Navy carrier. The actual average deployment is 6 months with a standard deviation of 1.5 months 3.28 Apply the empirical rule to describe the values representing 68 percent, 95 automobile with an average of $20,320 and a standard deviation of $1,250. 3.29 Describe the values representing 95 percent of American's weight gain over percent, and 99 percent of the data around the mean for a new mid-size the Thanksgiving and Christmas holidays with an average of 4.5 pounds and a standard deviation of 1.5. The average amount of time a preschool child spends in daycare each week is 7.2 hours with a standard deviation of 1.9 hours. Apply the empirical rule to describe the values for 95 percent of the preschool children's time spent in daycare each week. 3.30

Explanation / Answer

3.28. As per the emperical rule, 68%, 95% and 99% of data lies within 1, 2 and 3 standard deviation of mean respectively

Mean = $20,320

Standard deviation = $1,250

68% lies between 20,320-1x1250 & 20,320+1x1250

= 19,070 and 21,570

95% lies between 20,320-2x1250 & 20,320+2x1250

= 17820 and 22820

99% lies between 20,320-3x1250 & 20,320+3x1250

= 16,570 and 24,070

95% is within 2 standard deviations of mean, that is, 7.2-2x1.9 and 7.2+2x1.9

= 3.4 and 11 hours

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