STAT 3001 Week 5 Project: The Chi-Square Test

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Week 5 Project STAT 3001 Week 5 Project: The Chi - Square Test Chi - Square Goodness - of - Fit Test (equal frequencies) Four different brands of a pain medication used for chronic back ailments were tested to see if the number of side effects for each brand were the same. The table lists the results of the reported number of side effects for each brand of pain medication. Brand A Brand B Brand C Brand D 23 17 13 11 1) Use the Chi - Square Goodness - of - Fit test to see if there is a difference between the number of side effects from the different brands of medication. Set the significance level to .01. Describe the necessary Statdisk steps Enter the data  Click on analysis  Select the proper column and enter the significance level  Evaluate. The obtained output is given below, Num Categories: 4 Degrees of freedom: 3 Expected Freq: 16 Test Statistic, X^2: 5.2500 Critical X^2: 11.34488 P - Value: 0.1544 2) List the test statistics, p - value and whether to accept or reject the null hypothesis. Test Statistic, X^2: 5.2500 Critical X^2: 11.34488 P - Value: 0.1544 As the p - value is larger than the significance level so do not reject the null hypothesis. 3) State in your own words what the results of the hypothesis test is telling us.
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