statistics
posted by Katy .
Using the ztable (Table E) find the critical value (or values) for a = .018 left tailed test.

Assuming that Table E is the distribution of scores/areas within a normal distribution, look for the Z score that has .018 in the smaller portion. This would give you the Z score for a onetailed test, regardless of the direction.
I hope this helps. Thanks for asking.
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