Posted by Rachel on Monday, July 23, 2012 at 10:41pm.
Given that x is a normally distributed random variable with a mean of 60 and a standard deviation of 10, find the P(56 < x <74). Please show all your work and write your answer in a complete sentence.
Using the information from question 1, what percentage of the population will have an "x" value greater than 56 orP(x>56.)Please write your answer in a complete sentence.

statistics  PsyDAG, Tuesday, July 24, 2012 at 10:34am
Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to your Z scores.