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

Accounting	Legal	Insurance
3	7	3
2	5	8
1	5	5
4	2	3
3	4	2

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