Question

3-The blood platelet counts of a group of women have a uniform distribution with a mean of 362 and a standard deviation of 14.6. What is the approximate percentage of women with platelet counts within two standard deviations of the mean?

4-A department store, on average, has daily sales of $145.87. The standard deviation of sales is $14.04. On Tuesday, the store sold $184.41 worth of goods. Find Tuesday's z score.

6-Use the given sample data to find Q₃.

50, 47, 69, 55, 52, 61, 44, 58

Answer 1

According to empirical rule, approximately 95% of the data will fall within 2 standard deviations of the mean.

Approximate of women in this group have platelet counts within two standard deviations of the mean.

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