Stumble oppon this question You have two suppliers of plastics that are used to

Question

Stumble oppon this question You have two suppliers of plastics that are used to make a product. As far as you can tell with in-house testing the plastic each supplies is the same. However, you are concerned that one of them may cause more customer product returns. The only data you can really use is whether or not a customer returns the part. What type of statistical test could you use to look for differences between the customer return rate? 2-sample t-test 2 proportions test Chi-square test paired t-test

Explanation / Answer

The appropriate test is 2 proportions test. The sample is count of the return by the customers.

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