omework: Homework #3 score: 0 of 1 pt 13 of 26 (9 complete) HW Score: 31 92%, 83

Question

omework: Homework #3 score: 0 of 1 pt 13 of 26 (9 complete) HW Score: 31 92%, 83 of 26 pts 2.41 Question Help The blood platelet counts of a group of wornen have a bell-shaped distribution with a mean of 248.7 and a 1 000 cells/L.) Using the empirical rule, find each approximate percentage below d deviation of 682. (All units are a. What is the approximate percentage of women with platelet counts within 2 standard deviations of the mean, or between 112.3 and 385.1? b. What is the approximate percentage of women with platelet counts between 44.1 and 453.3? a. Approximately % o women in this group have platelet counts within 2 standard deviations of the mean, or between 112.3 and 385.1 (Type an integer or a decimal. Do not round.) war hox and then click Check Answer

Explanation / Answer

a) As per the empirical rule, 95% of the data lie between 2 standard deviations from the mean. Hence,

The answer is 95%

b) z score for 44.1 = (44.1 - 248.7)/68.2 = -3

z score for 453.3 = (453.3 - 248.7)/68.2 = 3

Hence,

Required percentage = 99.7%

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