Friday

February 27, 2015

February 27, 2015

Posted by **cindy** on Monday, July 19, 2010 at 10:45am.

A. What is the likelihood that an individual woman has a blood pressure abouve 125?

B. Suppose a random sample of n=300 women is selected and the mean blood pressure for tyhe sample is computed. What is the likelihood that the mean blood pressure for the sample will be above 125?

C. Suppose a random sample of n=300 women is selected and the mean blood pressure for the sample is computed. What is the likelihood that the mean blood pressure for the sample will be bleow. 114?

- statistical reasoning -
**PsyDAG**, Monday, July 19, 2010 at 1:13pmA. Z = (score-mean)/SD (for distribution of scores)

B & C. Z = (mean1 - mean2)/standard error (SE) of difference between means (for distribution of means)

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)

Since only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to these Z scores.

**Answer this Question**

**Related Questions**

Math - The mean systolic blood pressure of adult males is normally distributed ...

math - The mean systolic blood pressure of adult males is normally distributed ...

math - The mean systolic blood pressure of adult males is normally distributed ...

math - The mean systolic blood pressure of adult males is normally distributed ...

Math - The mean systolic blood pressure of adult males is normally distributed ...

Math/ Probability - The mean systolic blood pressure of adult males is normally ...

MATH Prob. - The mean systolic blood pressure of adult males is normally ...

Sampling Distribution - Sampling Distribution Complete solutions and ...

Math 156 - The systolic blood pressures of the patients at a hospital are ...

Statistics - The average age of chemical engineers is 37 years with a standard ...