A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.9 years, and standard devi
Posted: Thu Feb 17, 2022 10:59 am
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.9 years, and standard deviation of 0.9 years. The 9% of items with the shortest lifespan will last less than how many years? Answer = (Give your answer rounded to two decimal places.) Warning: Do not use the Z Normal Tables...they may not be accurate enough since WAMAP may look for more accuracy than comes from the table.