can anyone tell me how to find the p values for a z-score of 1.38 using the formula

_

x - score

variance/squareroot n

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- May 6th 2009, 04:27 AMpurcey_36p values
can anyone tell me how to find the p values for a z-score of 1.38 using the formula

_

__x - score__

variance/squareroot n - May 6th 2009, 04:40 AMmr fantastic
- May 6th 2009, 11:08 PMmatheagle
That's correct if you have a greater than sign in the alternative hypothesis.

This cannot be answered until I know $\displaystyle H_a$.

It doesn't matter if we are testing a mean or a proportion, we need $\displaystyle H_a$.

AND if $\displaystyle H_a:\mu\ne 21$, then the p-value is twice this 0.0838.