8 - Considering that the difference between the production time of the ampoule and the expiration date between the population average and the sample average is maximum 10 days at 95%confidence level,...

Extracted text: 8 - Considering that the difference between the production time of the ampoule and the expiration date between the population average and the sample average is maximum 10 days at 95%confidence level, how many products should be included in the sample? (Population variance = 400, z table = 1.96) O A) 10 O B) 11 O C) 15 O D) 13 O E) 14