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Consider the example of two-week drinking rate among undergrads (lecture notes 7a). We would like to test H0 p=0.7 vs. HA: p>0.7 using a significance level α =0.10. To do this, we take a survey of students. Of the 33 students surveyed, 26 reported drinking. Find the critical region {X ̅>c} for this test.
i know how to plug in the problem, but im not sure how to find z