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    Difference in mean number of hours spent at terminal

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    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 seleceted 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
    12
    10
    10
    12
    10

    Retail
    8
    8
    6
    8
    10

    Insurance
    10
    8
    6
    8
    10

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    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 seleceted 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 ...

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