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Understanding the Chi-square?

Six Sigma – iSixSigma Forums Old Forums General Understanding the Chi-square?

Viewing 7 posts - 1 through 7 (of 7 total)
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  • #46099

    Allthingsidiot
    Participant

    A sample of 10 items were  drawn from  a  normal universe whose variance is  25,the  variance from  the  sample  is  35
    Should  we  accept the  hypothesis?if  yes  why?
    I  need  only  hints ,appreciate  your  cooperation.Please those  who  want to  repeat  “do  your  home-work” are  not  invited  to  participate..
    thanks

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    #151917

    Hypotenuse
    Participant

    What is a normal universe?
    What is the hypothesis?

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    #151920

    Allthingsidiot
    Participant

    Good  Questions?

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    #151951

    BritW
    Participant

    You haven’t posed a hypothesis to reject/fail to reject.

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    #152019

    BTDT
    Participant

    ATI:Hint: Based on the sample(N=10), is the variance of the population equal to 25? Look for a formula about variances that contains a value for sample variance, a value for population variance and a sample size.Cheers, BTDT

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    #152032

    Allthingsidiot
    Participant

    Thank You BTDT
    I came  out  with  a  SD  between  4.32 and 9.73 ,using  the  formula  and  the  appropriate Chi-table

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    #152050

    Sigmordial
    Member

    Is your desired confidence 90% or 95%?  Your interval reflects a 90% confidence interval. 

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