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    Statistics - Confidence Interval

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    The standard hemoglobin reading for healthy adult men is 15g/100ml with a standard deviation of 2g. For a group of 25 men we find a mean hemoglobin of 16.0g. Obtain a 95% confidence interval and give its interpretation.

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    Solution Preview

    x-bar = 16, sigma = 2, n = 25

    SE = sigma/sqrt(n) = 2/sqrt(25) = 0.4

    The 95% CI for the mean is ...

    Solution Summary

    The expert examines the confidence intervals for the standard hemoglobin readings. Step-by-step solution is provided.