The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 264.8 and a standard deviation of 63.2. (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 3 standard deviations of the mean, or between 75.2 and 454.4? b. What is the approximate percentage of women with platelet counts between 201.6 and 328.0? a. Approximately nothing% of women in this group have platelet counts within 3 standard deviations of the mean, or between 75.2 and 454.4. (Type an integer or a decimal. Do not round.) b. Approximately nothing% of women in this group have platelet counts between 201.6 and 328.0. (Type an integer or a decimal. Do not round.)

a) Approximately 99.7% of women in this group have platelet counts within 3 standard deviations of the mean, or between 75.2 and 454.4.

b) Approximately 68% of women in this group have platelet counts between 201.6 and 328.0.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed(bell shaped) random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 264.8

Standard deviation = 63.2

a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the mean, or between 75.2 and 454.4?

By the Empirical Rule,

Approximately 99.7% of women in this group have platelet counts within 3 standard deviations of the mean, or between 75.2 and 454.4.

b. What is the approximate percentage of women with platelet counts between 201.6 and 328.0?

201.6 = 264.8 - 63.2

201.6 is one standard deviation below the mean

328 = 264.8 + 63.2

328 is one standard deviation above the mean

By the Empirical rule,

Approximately 68% of women in this group have platelet counts between 201.6 and 328.0.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for