Asked by Vicky

find the number z such that the proportion of observations are less than z in a standard normal distribution is 0.8
Answered by PsyDAG
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score related to that proportion.
Answered by QHTNuZMPcEdEYFht
All things consdiered, this is a first class post
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