- 18 The Manufacture Of A Certain Part Requires Two Dif Ferent Machine Operations The Time On Machine 1 Has Mean 0 5 Ho 1 (96.33 KiB) Viewed 8 times
18. The manufacture of a certain part requires two dif- ferent machine operations. The time on machine 1 has mean 0.5 ho
-
answerhappygod
- Site Admin
- Posts: 899603
- Joined: Mon Aug 02, 2021 8:13 am
18. The manufacture of a certain part requires two dif- ferent machine operations. The time on machine 1 has mean 0.5 ho
18. The manufacture of a certain part requires two dif- ferent machine operations. The time on machine 1 has mean 0.5 hours and standard deviation 0.4 hours. The time on machine 2 has mean 0.6 hours and stan- dard deviation 0.5 hours. The times needed on the machines are independent. Suppose that 100 parts are manufactured. a. What is the probability that the total time used by machine 1 is greater than 55 hours? b. What is the probability that the total time used by machine 2 is less than 55 hours? c. What is the probability that the total time used by both machines together is greater than 115 hours? d. What is the probability that the total time used by machine 1 is greater than the total time used by machine 2?