Chi-Square Test of Association/Independence — Quiz
Question 7 • Statistics
A local baker is interested if there is an association between the type of bread customers purchase and whether they tip for service. She selects a random sample of 61 customers and categorizes them appropriately. She would like to determine if there is convincing evidence of an association. Let alpha is equal to 0 point 0 5 What are the hypotheses for this test?
Answer
A
cap h sub 0 : There is no association between the type of bread customers purchase and whether they tip for service. cap h sub A : There is an association between the type of bread customers purchase and whether they tip for service.
B
cap h sub 0 : There is an association between the type of bread customers purchase and whether they tip for service. cap h sub A : There is no association between the type of bread customers purchase and whether they tip for service.
C
cap h sub 0 : There is no difference in the distribution of the type of bread customers purchase and whether they tip for service. cap h sub A : There is a difference in the distribution of the type of bread customers purchase and whether they tip for service.
D
cap h sub 0 : There is a difference in the distribution of the type of bread customers purchase and whether they tip for service. cap h sub A : There is no difference in the distribution of the type of bread customers purchase and whether they tip for service.
Explanation
This is a test of association between two categorical variables: type of bread purchased and whether the customer tips. The null hypothesis states that there is no association between these variables; the alternative states that there is an association. Therefore, choice A gives the correct hypotheses.
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