Suppose we wish to know if there is a difference in ch

Friday July 15, 2022

Suppose we wish to know if there is a difference in choice of model based on comfort between population groups classified as under-weight normal weight or over-weight. To make this determination 600 people were classified in one of the three weight classes and then asked to select the most comfortable seat. The results are summarized in the following table.Seat PreferenceModel AModel BModel CWeight Class:Under-Weight1004050Normal-Weight 907060Over-Weight406090A.Write an appropriate null and alternative hypothesis.B.Compute the expected frequency for the first cell in row one.C.Test the null hypothesis at the 0.05 significance level. Make a decision to reject or fail to reject the null based on the p-value.D.Draw a conclusion about the relationship between weight and type of seat based on comfort.

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