Tom K. answered • 12/22/20
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in Excel, use =NORM.INV(0.04,14.1,0.8/SQRT(16)) = 13.7
Shelby W.
asked • 12/22/20sampling distributions
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 14.1 years, and standard deviation of 0.8 years.
If 16 items are picked at random, 4% of the time their mean life will be less than how many years?
Give your answer to one decimal place
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