a. Explanation Calculation: The given information is that, the number of successes is x = 56 , the sample size is n = 80 and α = 0.05 . The test hypotheses are given below: Null hypothesis: H 0 : π ≤ 0.60 Alternative hypothesis: H 1 : π > 0.60 The sample proportion is calculated as follows: p = x n = 56 80 = 0.7 Test statistic: The formula for test statistic is, z calc = p − π 0 π 0 ( 1 − π 0 ) n Where p is sample proportion, π is the population proportion and n is the sample size. Substitute p = 0.7 , π 0 = 0.60 and n = 80 in the test statistic formula. z calc = 0.7 − 0 b. To determine Find the test statistic and the p -value. c. To determine Find the test statistic and the p -value.

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ISBN: 9781259957598

Author: DOANE

Publisher: RENT MCG

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Chapter 9.6, Problem 46SE

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Chapter 9.6, Problem 45SE

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