You have been assigned to test the hypothesis that the average number of hours worked per week by employees differs between the United States, China, and Sweden.

The following data show the number of hours that a random sample of employees worked last week in each country. These data can also be found in the Excel file employee hours.xlsx.

United States Sweden China 34 28 43 41 34 51 38 25 40 31 33 34

a. Perform a one-way ANOVA using a = 0.05 to determine if a difference exists in the average number of hours that an employee works per week between these countries.

b. If appropriate, perform a multiple comparison test to determine which pairs are different using a = 0.05.

c. Verify your results using Excel or PHStat.

AppendixLO1