Statistics

Find the indicated probability using the standard normal distribution: P(z<-1.45)

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  1. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.

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  2. Do I have to subtract that number from 1? That's really the part I can't remember...there's some time when you leave it alone and another when you subtract from 1...?

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  3. Look up the Z score on that table. You are looking for probability of Z score less than (<) -1.45.

    You could also try:

    http://davidmlane.com/hyperstat/z_table.html

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