7. For testing the hypotheses H0: P = 0.8 versus H1: P ≠ 0.8 at 1% significance level, we obtain a sample of n = 100 and p = 0.75. The Type-I error for this test is closest to:

A. 0.100

B. 0.140

C. 0.212

D. 0.010

E. 0.020

The answer is C but I don’t understand how to get there. plz show your work.

 

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