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Chi square test for Goodness of fit & Association

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1. A survey finds that, given the choice, 34 females prefer males much taller than themselves, and 55 females prefer males only slightly taller than themselves.

A) What procedure should we perform?
B) What are H0 and Ha?
C) With α=.05, what do you conclude about the preferences of females in the population?
D) Describe how you would graph these results.

2. The following data reflect the frequency with which people voted in the last election and were satisfied with the officials elected:
Satisfied
Yes No
Voted Yes 48 35
No 33 52

A) What procedure should we perform?
B) What are H0 and Ha?
C) What is fe in each cell?
D) Compute X2obt
E) With α=.05, what do you conclude about the correlation between these variables?
F) How consistent is this relationship?

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The solution provides step by step method for the calculation of chi square test for goodness of fit and association. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.

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