A manufacturer of a certain product has three factories located across the United States. There are three major causes of defects in this product, which we will identify as A, B, and C. During a recent week the reported occurrences of product defects in the three factories were as follows:

Based on these frequencies, can we conclude that the defect patterns in the different factories are the same?

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Factory 1 A,15; A,10; A,32; B, 25 B, 12; B. 28; C,23 Factory 2 A, 10B C,21 C, 21 Factory 3 C,44