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P Do Homework - Ryan Liska - Google Chrome Secure | https://www.mathxl.com/Student/PlayerHomework.aspx?homeworkId=465647763&questi..;, a Business Statistics S Spring 2018 Homework: Chapter 10 Review Homework Save Score: 0 of 1 pt 80f 13 (0 complete) HW Score: 0%, 0 of 13 pts Question Help Country A Country B 10.1.7-T The data to the right show the average retirement ages for a random sample of workers in Country A and a random sample of workers in Country B. Complete parts a and b Sample mean Sample size Population 64.7 years 66.3 years 40 40 standard eiation 4.7 years 5.4 years a. Perform a hypothesis test using = 0.05 to determine if the average retirement age in Country B is higher than it is in Country A. Let population 1 be the workers in Country A and population 2 be the workers in Country B. Identify the null and alternative hypotheses. Choose the correct answer below. C. Ho: 1-H220 Click to select your answer and then click Check Answer parts remaining Clear All Check Answer

Explanation / Answer

a) Correct Answer: option (C)
H0: the average retirement age in Country B is not higher than it is in County A
H1; the average retirement age in Country B is higher than it is in County A
i.e. the average retirement age in Country A is less than than it is in County B

b)

Test Statistic, t: -1.4135
Critical t: 1.664623
P-Value: 0.9193

Degrees of freedom: 78.0000

Here |t| value is less than t critical value, so we accept H0

thus we concude that  the average retirement age in Country B is not higher than it is in County A

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