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March 4, 2015

March 4, 2015

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.

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