Question

The symbolФ(z) is often used to denote the area under the standard normal curve that lies to the left of a specified value of z. Consider a one-mean z-test. Denote z0 as the observed value of the test statistic z. Express the P-value of the hypothesis test in terms of Ф if the test is

a. left tailed. b. right tailed. c. two tailed.

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