Tuesday

October 21, 2014

October 21, 2014

Posted by **Bill** on Tuesday, March 26, 2013 at 8:55pm.

A. Calculate the probability a randomly selected man weights less than 225 lbs

B. Approximately 72% of men’s weights exceed how many pounds.

C. In a random example of 50 men, calculate the probability their mean weights is no more than 180 pounds.

D. In a random example of 50 men, approximately 8% of all possible men’s weights will exceed how many pounds.

- Statistics -
**PsyDAG**, Wednesday, March 27, 2013 at 1:38pmA, B. Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (B use.72) related to the Z score.

Last two problems relate to distribution of means rather than a distribution of raw scores.

C, D. Z = (score-mean)/SEm

SEm = SD/√n

Use same table.

**Answer this Question**

**Related Questions**

statistics - Based on data from the National Health and Nutrition Examination ...

statistics - The weights of steers in a herd are distributed normally. The ...

statistics - Suppose that the weights of airline passenger bags are normally ...

math - A fitness company surveyed the weights of its 90 costumers. Assume that ...

math - A fitness company surveyed the weights of its 90 costumers. Assume that ...

Statistics - Suppose that the birth weight of newborn babies in the U.S is ...

STATISTICS - The height of PU men are normally distributed with mean 65 in. and ...

Math Helppp - Scores for men on the verbal portion of the SAT-I test are ...

Finite math - Scores for men on the verbal portion of the SAT-I test are ...

stat - assume that the heights of men are normally distributed with a mean of 68...