The blood platelet counts of a group of women have a bell-shaped distribution with a mean of

249.8

and a standard deviation of

65.6.

(All units are 1000

cells/L.)

Using the empirical rule, find each approximate percentage below.

a.	What is the approximate percentage of women with platelet counts within 3 standard deviations of the mean, or between 53.0 and 446.6?
b.	What is the approximate percentage of women with platelet counts between 184.2 and 315.4?

Question content area bottom

Part 1

a. Approximately

enter your response here%

of women in this group have platelet counts within

3

standard

deviations

of the mean, or between

53.0

and

446.6.