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    Confidence Interval for mean

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    34. A recent survey of 50 executives who were laid off from their previous position revealed it took a mean of 26 weeks for them to find another position.

    The standard deviation of the sample was 6.2 weeks.

    Need the following answered, please see attached worksheet:
    1) Construct a 95 percent confidence interval for the population

    2) Is it reasonable that the population mean is 28 weeks?

    3)Justify your answer.

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    Solution Summary

    The solution provides step by step method for the calculation of confidence interval for mean . Formula for the calculation and Interpretations of the results are also included.