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    Confidence Intervals & T-tests

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    Using the attached Excel file, calculate both a confidence interval for a mean (do not worry about the rounding) and a 1-sample t-test that the mean age is less than 62.

    What is found? What is the CI and can we reject or accept the null or alternative hypotheses?

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    Solution Preview

    For the confidence interval for a mean, we first calculate the mean and standard deviation. I do this in ...

    Solution Summary

    The solution gives detailed steps on building the confidence interval and performing a one-sample t test for the given data using excel.