Question
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.9 years, and standard deviation of 2 years. Round your
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.9 years, and standard deviation of 2 years.
Round your answer to one decimal place.
If 7 items are picked at random, 10% of the time their mean life will be less than how many years?
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Real Analysis
Authors: N L Carothers
1st Edition
1139632434, 9781139632430
