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Thread: Confidence intervals #2

  1. February 18th 2010, 11:14 AM #1
    bathola
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    Question Confidence intervals #2

    A question I need help with...

    The average hemaglobin reading for a sample of 20 teachers was 16 grams per 100 milliliters, witha sample standard deviation of 2 grams. Find the 99% confidence interval f the true mean.
    Last edited by mr fantastic; February 19th 2010 at 01:21 AM. Reason: Changed post title
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  2. February 19th 2010, 01:22 AM #2
    mr fantastic
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    Quote Originally Posted by bathola View Post
    A question I need help with...

    The average hemaglobin reading for a sample of 20 teachers was 16 grams per 100 milliliters, witha sample standard deviation of 2 grams. Find the 99% confidence interval f the true mean.
    Have you reviewed any examples from your class notes or textbook? Where are you stuck?
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