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Show how ( Chi-Square) can be applied, and how it may be used in any industry...

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Basic Math

Show how ( Chi-Square) can be applied, and how it may be used inany industry of your choosing. Provide a brief description of whatthe “Chi-Square” distribution is used for, then provide theexample, and then tell what that example showed.

(Note: The answer has to be typed, not hand written nor in apicture.) Thank you.

Answer & Explanation Solved by verified expert
4.0 Ratings (534 Votes)
We use ChiSquare when we have two categorical variables andwant to determine whether there is a significant associationbetween the two variablesStep 1 The observed frequencies are calculated for thesampleStep 2 The expected frequencies are obtained from previousknowledge or belief or probability theory In order to proceed tothe next step it is necessary that each expected frequency is atleast 5Step 3 A hypothesis test is performedi The null hypothesis H0 the population frequencies are equal tothe expected frequenciesii The alternative hypothesis Ha the null hypothesis is falsewhat does this imply about the population frequenciesiii is the level of significanceiv The degrees of freedom k 1v A test statistic is calculatedvi From and k 1 a critical value is determined from thechisquare tablevii Reject H0 if X2 is larger than the critical valuerighttailed    See Answer
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