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    mherr's Avatar
    mherr Posts: 4, Reputation: 1
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    #1

    May 4, 2009, 05:06 PM
    95% confidence interval
    39 nuts are gathered. They have an average size of 3.34 cent and a standard deviation of .45 cent. Find the 95% confidence interval for the mean size of all the nuts
    mherr's Avatar
    mherr Posts: 4, Reputation: 1
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    #2

    May 5, 2009, 12:47 AM
    Quote Originally Posted by mherr View Post
    39 nuts are gathered. They have an average size of 3.34 cent and a standard deviation of .45 cent. Find the 95% confidence interval for the mean size of all the nuts
    OK, here is the work I've got so far:



    where can i find the t stat
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #3

    May 5, 2009, 05:34 AM
    95% C.I.
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