Question
If X is a random variable with distribution X~N(350,110)
find (a)P(X<400) and b)P(250<X<400)
find (a)P(X<400) and b)P(250<X<400)
Answers
PsyDAG
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores calculated.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores calculated.