The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 257.5 and a standard deviation of 66.2. ​(All units are 1000 ​cells/μ​L.) Using the empirical​ rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 2 standard deviations of the​ mean, or between 125.1 and 389.9​? b. What is the approximate percentage of women with platelet counts between 58.9 and 456.1​?

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The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 257.5
and a standard deviation of 66.2. ​(All units are 1000 ​cells/μ​L.)
Using the empirical​ rule, find each approximate percentage below.
a.
What is the approximate percentage of women with platelet counts within
2
standard
deviations
of the​ mean, or between
125.1
and
389.9​?
b.
What is the approximate percentage of women with platelet counts between
58.9
and
456.1​?
a. Approximately enter your response here​%
of women in this group have platelet counts within 2
 standard deviations
of the​ mean, or between 125.1
and 389.9. ​(Type an integer or a decimal. Do not​ round.)
 
b. Approximately enter your response here​% of women in this group have platelet counts between 58.9 and
456.1. ​(Type an integer or a decimal. Do not​ round.)
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