SOLUTION: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.3 years, and standard deviation of 1.7 years.
If you randomly purchase one item, wha
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-> SOLUTION: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.3 years, and standard deviation of 1.7 years.
If you randomly purchase one item, wha
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Question 1197892: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.3 years, and standard deviation of 1.7 years.
If you randomly purchase one item, what is the probability it will last longer than 11 years?
Round answer to four decimal places Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! Normal Distribution: µ = 9.3 and σ = 1.7
Using a hand-held TI or similarly an inexpensive calculator like an Casio fx-115 ES plus
P(x > 11) = normcdf(11, 9999, 9.3, 1.7) = .1587 (Rounded to four decimal places)
