A Manufacturer Knows That Their Items Have A Normally Distributed Lifespan With A Mean Of 9 2 Years And Standard Devia 1 (13.88 KiB) Viewed 11 times
A Manufacturer Knows That Their Items Have A Normally Distributed Lifespan With A Mean Of 9 2 Years And Standard Devia 2 (13.88 KiB) Viewed 11 times
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.2 years, and standard deviation of 1.4 years. If you randomly purchase 25 items, what is the probability that their mean life will be longer than 9 years? P(9)= 0.76 Submit Question X
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!