Thursday

April 24, 2014

April 24, 2014

Posted by **Sunshine** on Thursday, March 21, 2013 at 12:44am.

a)If one subject is randomly selected and tested, find the probability of a score greater than 1800

b)if 50 subjects are randomly selected and tested fid the probability that the sample mean is between 2000 and 2100

- statistics -
**PsyDAG**, Thursday, March 21, 2013 at 1:01pma) Z = (score-mean)/SD

b) Z = (score-mean)/SEm

SEm = SD/√n

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

**Related Questions**

Statistics - Scores on a visual perception test are normally distributed with a ...

statistics - Scores on an english test are normally distributed with a mean of ...

statistics - The scores for standardized test are normally distributed with a ...

statistics - the admissions policy at a certain university requires that ...

statistics - the admissions policy at a certain university requires that ...

Word Problem - A math teacher gives two different tests to measure students' ...

Statistics - A distribution of 800 test scores in a biology course was ...

Statistics Math Help - A distribution of 800 test scores in a biology course was...

Statistics - M/C - 14. The marks on a statistics test are normally distributed ...

statistics - Assume that a set of test scores is normally distributed with a ...