Question

Trials in an experiment with a polygraph include results that include 6 cases of correct results. Use a 001 significance level to test the claim that such polygraph results are correct less than 80% of the time Identify the nut hypothesis, aterative hypothesis est , value conclusion about the null hypothesis, and final conclusion that addresses the original claim Let p be the population proportion of correct polygraph results. Identify the land atemative hypotheses. Choose the correct answer below. OA HP 620 OB 030 OCH PO30 ODP OE HP=020 Hyp=020 The test statistics (Round to two decimal places as needed) The P-values (Round to four decimal places as needed) Identify the conclusion about the nullypothesis and the final conclusion that addresses the original claim Hi There sufficient evidence to support the claim that the polygraph results are correct less than 80% of the time DELL

Answer 1

The statistical software output for this problem is :

One sample proportion summary hypothesis test:
p : Proportion of successes
H₀ : p = 0.8
H_A : p < 0.8
Hypothesis test results:

Proportion	Count	Total	Sample Prop.	Std. Err.	Z-Stat	P-value
p	76	99	0.76767677	0.040201513	-0.80403025	0.2107

P-value = 0.2107 >0.01, we fail to reject H0.

Answers:

H₀ : p = 0.8
H_A : p < 0.8

z= -0.80

P-value = 0.2107

fail to reject H0, There is NOT sufficient...