A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.1 years, and standard deviation of 1.6 years. If you randomly purchase 14 items, what is the probability that their mean life will be longer than 10 years? (Give answer to 4 decimal places.)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.1 years, and
standard deviation of 1.6 years.
If you randomly purchase 14 items, what is the probability that their mean life will be longer than 10 years?
(Give answer to 4 decimal places.)
Transcribed Image Text:A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.1 years, and standard deviation of 1.6 years. If you randomly purchase 14 items, what is the probability that their mean life will be longer than 10 years? (Give answer to 4 decimal places.)
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