8.3.23 97 results that include 23 cases of wrong results and 74 cases of correct

Question

8.3.23 97 results that include 23 cases of wrong results and 74 cases of correct results. Use a 0.05 signilficance level to test Trials in an the claim that such polygraph results are corect less than 80% of the time Identify the null hypothesis alternative hypothe test statistic, P the null hypothesis, and final conclusion that addresses the original claim Use the P-value method Use the normal distribution, as an approx -value, condlusion about imation of Let p be the population proportion of correct polygraph results. Idontify the null and altematlive hypotheses. Choose the correct answer below H p>0.80 OC. Ho: p:080 H, p s0.80 H, p#080 H,: p#020 H, pc0.20 3 CD 144

Explanation / Answer

p = proportion of cases where polygraph was correct = 80% = 0.8

H0: p = 0.8

H1: p < 0.8

Option C

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