Posted by **Mike** on Monday, June 18, 2012 at 10:55pm.

An organization is studying whether women have caught up to men in starting pay after attending college. They randomly sampled 28 women, who earned an average of $38,293.78 out of college with a standard deviation of $5,170.22. Twenty-four men were also randomly sampled, and their earnings averaged $41,981.82 with a standard deviation of $3,195.42. Using a significance level of 0.02, do these data provide strong evidence that women have not yet caught up to men in terms of pay? If so, can we make a causal con- clusion? If so, explain why. If not, provide an example of why the causal interpretation would not be valid.

- Statistics -
**PsyDAG**, Tuesday, June 19, 2012 at 10:39am
Z = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√n

If 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 proportion related to the Z score.

- Statistics -
**Anonymous**, Friday, June 22, 2012 at 12:24pm
The probability of being a smoker for a population of college students is 0.20.The standard deviation for samples of 1600 students is 0.01. The standard deviation would be smallest for which of these sample sizes?

A) 16

## Answer This Question

## Related Questions

- statistics - According to a recent studey, 1 in every 4 women has been a victim ...
- statistics - we want to if men and women perform differently on statistics tests...
- math - A small college has 1250 students. There are 30 more women than men. How ...
- STATISTICS - Length of Hospital Stays: The average length of “short” hospital ...
- Statistics - A sample survey interviews an SRS of 115 college women. Suppose ...
- statistics - A sample survey interviews an SRS of 263 college women. Suppose (as...
- Statistics(math) - (20.47 S-AQ) A sample survey interviews an SRS of 252 college...
- college psych - Which of the following is true of the prevalance rate of ...
- statistics - a computer teacher has 20 students 8 who are women and 12 are men. ...
- statistics - There were 50 men and 50 women who were randomly selected from a ...

More Related Questions