Question 147394: How do you calculate P value of Z from the chart?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! If the test is 2-tail, the p-value for a particular
z test statistic is two times the probability that
z is greater than the test statistic value if the
test statistic value is positive, or that z is less
than the tst statistic value if the test statistic
is negative.
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If the test is right-tailed, the p-value for a particular
z test statistic is the probability that z is greater
than the test statistic value.
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If the test is left-tailed, the p-value for a particular
z test statistic is the probability that z is less than
the test statistic value.
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Cheers,
Stan H.
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