Interpretation: Test of Homogeneity Consider Zanes study regarding products recycled and age group (see Problem 5). Suppose

Question:

Interpretation: Test of Homogeneity Consider Zane’s study regarding products recycled and age group (see Problem 5). Suppose he found a sample x2 5 16.83.

(a) How many degrees of freedom are used? Recall that there were 4 age groups and 3 products specifi ed. Approximate the P-value and conclude the test at the 1% level of signifi cance. Does it appear that the proportion of people who recycle each of the specifi ed products differ by age group?

Explain.

(b) From this study, can Zane identify how the different age groups differ regarding the proportion of those recycling the specifi ed product?

Explain.

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