# One-way analysis of variance

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How do I figure this problem out using the population means?

The manager of a computer software company wishes to study the number of hours top executives spend at their computer terminals by type of industry. The manager selected a sample of five executives from each of three industries. At the .05 significance level, can she conclude there is a difference in the mean number of hours spent at a terminal per week by industry?

Banking----Retail-----Insurance

12------------8------------10

10------------8------------8

10------------6------------6

12------------8------------8

10------------10-----------10

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This solution shows how to conduct a one-way analysis of variance with all calculations done by hand. All formulas, calculations and complete explanations are included.

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This solution shows how to conduct a one-way analysis of variance with all calculations done by hand. All formulas, calculations and complete explanations are included. Please see the attached Word document for the solution to this exercise.

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How do I figure this problem out using the population means?

The manager of a computer software company wishes to study the number of hours top executives spend at their computer terminals by type of industry. The manager selected a sample of five executives from each of three industries. At the .05 significance level, can she conclude there is a difference in the mean number of hours spent at a terminal per week by industry?

Banking----Retail-----Insurance

12------------8 ------------10

10------------8 ------------8

10------------6 ------------6

12------------8 ------------8

10------------10 ----------- 10

Solution

This is an example of an analysis of variance problem with a completely randomized design. A ...

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