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Math Help - Hypothesis Testing p-value

  1. #1
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    Hypothesis Testing p-value

    My group has been arguing over this question...

    Some are getting 0.299 for the p-value, personally I'm getting 0.298.

    Bill claims that, on average, books are more expensive to buy for the Kindle eBook reader than the Kobi eBook reader. She randomly sampled 50 books sold for the Kindle, and got a sample mean = $31, and s = $26. Then she randomly sampled 45 books sold for the Kobi, and got a sample mean = $28, and s = $29.

    If you conduct a hypothesis test with respect to Billís claim (0.05 significance level), what is the p-value that you obtain? (Use Case I)
    If someone could explain which is the correct answer, and how would it be calculated, it would be much appreciated, thanks .
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  2. #2
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    Re: Hypothesis Testing p-value

    Quote Originally Posted by Coukapecker View Post
    My group has been arguing over this question...

    Some are getting 0.299 for the p-value, personally I'm getting 0.298.



    If someone could explain which is the correct answer, and how would it be calculated, it would be much appreciated, thanks .
    Well you are not far off! Are you assuming equal variance? What is case I? Do you have the whole data set?
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  3. #3
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    Re: Hypothesis Testing p-value

    Equal variance is assumed, that's what is meant by case I. :P. No data set is given, only what I posted :<.
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  4. #4
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    Re: Hypothesis Testing p-value

    No worries, enter your data here

    In-Silico Online

    or here

    GraphPad QuickCalcs: t test calculator

    I get p=0.298 therefore do not reject H_0
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