10.4.9 consumer warranty purchases
A company’s sales record show that an extended warranty was purchased on 38 out of 89 sales of a product of type A, an extended warranty was purchased on 62 out of 150 sales of a product of type B, and an extended warranty was purchased on 37 out of 111 sales of a product of type C. Do these data provide sufficient evidence to indicate that the probability of a customer purchasing the extended warranty is different for the three product types?