what is the answer and how

Firefox File Edit View History Bookmarks Tools Window Help O C 97% Q Sun Mar 23 6:31 PM W10.2_central limit theorem - 2(X Assignment 5_W2025.pdf X + C O D file:///Users/amiekitchener/Downloads/Assignment 5_W2025.pdf OLAS= o Mail - Amie Kitchen... OSAP Durham College | O... Homepage - Durha... MyDC | MyDC Home - OneDrive Chat with PDF | Goo... Al Essay Writer with... En ~| V 2 of 3 - + 70% Q2. Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 28 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of watch lifetimes is 5 months, and the distribution of lifetimes is normal. a) If Accrotime guarantees a full refund on any defective watch for 2 years (24 months) after the purchase, what percentage of total production should the company expect to replace? (2 marks) b) If Accrotime does not want to make refunds on more than 12% of the watches it makes, how long should the guarantee period be (to the nearest month)? (3 marks) MAR 23 tv