Question

The marketing department is investigating methods of promoting the extended warranty for electronic equipment. In one method, customers are informed about the extended warranty by the cashier at the checkout. In another method, customers see a prominent display at the checkout. A random sample of customers who experienced each method of pro motion is selected, and a 1 is recorded if the customer bought the extended warranty and a 0 if the customer did not.
At the 10% significance level, is there evidence of a difference in the proportions of customers who bought the extended warranty between the two pro motion methods?


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  • CreatedJuly 12, 2015
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