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Trials in an experiment with a polygraph include 98 results that include 23 cases of wrong results and 75 cases of correct results. Use a
Trials in an experiment with a polygraph include 98 results that include 23 cases of wrong results and 75 cases of correct results. Use a 0.01 significance level to test the claim that such polygraph results are correct less than 80% of the time. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. Use the normal distribution as an approximation of the binomial distribution. Question content area bottom Part 1 Let p be the population proportion of correct polygraph results. Identify the null and alternative hypotheses. Choose the correct answer below. A. H Subscript 0: pequals0.20 H Subscript 1: pnot equals0.20 B. H Subscript 0: pequals0.80 H Subscript 1: pnot equals0.80 C. H Subscript 0: pequals0.20 H Subscript 1: pgreater than0.20 D. H Subscript 0: pequals0.80 H Subscript 1: pless than0.80 Your answer is correct.E. H Subscript 0: pequals0.20 H Subscript 1: pless than0.20 F. H Subscript 0: pequals0.80 H Subscript 1: pgreater than0.80 Part 2 The test statistic is zequals negative 0.86. (Round to two decimal places as needed.) Part 3 The P-value is enter your response here. (Round to four decimal places as needed.)
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