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    A Stockbroker at Critical Securities

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    A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of 3.9 percent. The mean rate of return on a sample of 8 utility stocks was 10.9 percent with a standard deviation of 3.5 percent. At the .05 significance level, can we conclude that there is more variation in the oil stocks?

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    https://brainmass.com/statistics/hypothesis-testing/stockbroker-critical-securities-67127

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    A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of 3.9 percent. The mean rate of return on a sample of 8 utility stocks was 10.9 percent with a standard deviation of ...

    Solution Summary

    The solution provides clear, succinct explanation the conclusion of a variation in the oil stocks.

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