Q48 A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.2 years, and standard d
Posted: Tue Apr 26, 2022 5:59 pm
Q48
A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 2.2 years, and standard
deviation of 0.6 years.
If 7 items are picked at random, 9% of the time their mean life
will be less than how many years?
Give your answer to one decimal place.
A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 2.2 years, and standard
deviation of 0.6 years.
If 7 items are picked at random, 9% of the time their mean life
will be less than how many years?
Give your answer to one decimal place.