Posted by **Jane Segurra** on Wednesday, March 20, 2013 at 8:33pm.

What is the probability of randomly selecting a z-score less than z = –0.80 from a normal distribution.

a)-0.2119

b)0.7881

c)0.2119

d)-0.7881

- Statistics 250 -
**Reiny**, Wednesday, March 20, 2013 at 10:04pm
This can be done without even looking at any tables, assuming the correct answer is in there

First of all, rule out the two negative results, prob's can't be negative

a z score of 0 would be .5

any negative z-score would be < .5

So there is only one choice, namely C) .2119

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