안녕하세요 이연욱 샘입니다.

7(d)

Type I error: Proportion is large when the actual proportion is small.  The result of type I error is that factory consider good products as defective products. Thus, the factory throw good products even though they are in fact good products.  Since the factory considers a quality control more seriously, customers have more chance to buy good products. Therefore, the customers consider Type I error.

Thank you.