The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 255.4 and a standard deviation of 63.9. (All units are 1000 cells/μl.) 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 127.6 and 383.22 b. What is the approximate percentage of women with platelet counts between 191.5 and 319.37 ECCOD a. Approximately % of women in this group have platelet counts within 2 standard deviations of the mean, or between 127.6 and 383.2. (Type an integer or a decimal. Do not round.) b. Approximately % of women in this group have platelet counts between 191.5 and 319.3. (Type an integer or a decimal. Do not round)

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Question 7
The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 255.4 and a standard deviation of 63.9. (All units are 1000 cells/μl.) 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 127.6 and 383.2?
b. What is the approximate percentage of women with platelet counts between 191.5 and 319.37
a. Approximately % of women in this group have platelet counts within 2 standard deviations of the mean, or between 127.6 and 383.2
(Type an integer or a decimal. Do not round.)
b. Approximately % of women in this group have platelet counts between 191 5 and 319.3
(Type an integer or a decimal. Do not round.)
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Transcribed Image Text:The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 255.4 and a standard deviation of 63.9. (All units are 1000 cells/μl.) 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 127.6 and 383.2? b. What is the approximate percentage of women with platelet counts between 191.5 and 319.37 a. Approximately % of women in this group have platelet counts within 2 standard deviations of the mean, or between 127.6 and 383.2 (Type an integer or a decimal. Do not round.) b. Approximately % of women in this group have platelet counts between 191 5 and 319.3 (Type an integer or a decimal. Do not round.) F4 $ 4 73 F5 ➤ 11 % 5 T F6 A 6 F7 & 7 F8 F9 * 8 P DELL 1 F10 X ( 9 O F11 38 ) O F12 P PrtScr ugo { [ + = Insert } 1 Delete Backspace PgUp Num Lock 8 Next PgDn 7 I Home 8 * End 9
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Step 1

Solution-:

Given: μ=255.4,σ=63.9

We want to find,

(a) Approximately .....% of women in this group with platelet counts within 2 standard deviations of the mean or between 127.6 and 383.2?

(b) Approximately .....% of women in this group have platelet counts between 191.5 and 319.3?

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