Celsie
05.05.2020 •
Mathematics
The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 261.5 and a standard deviation of 63.3. (All units are 1000 cells/muL.) 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 134.9 and 388.1?
b.
What is the approximate percentage of women with platelet counts between 198.2 and 324.8?
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Ответ:
-3
Explanation:
4 + 3 = 7
7² = 49
2 · 5 = 10
49 ÷ 7 = 7
7 - 10 = -3