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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.2 years, and standard devia

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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.2 years, and standard devia

Posted: Tue Jul 05, 2022 9:57 am
by answerhappygod
A Manufacturer Knows That Their Items Have A Normally Distributed Lifespan With A Mean Of 9 2 Years And Standard Devia 1
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A Manufacturer Knows That Their Items Have A Normally Distributed Lifespan With A Mean Of 9 2 Years And Standard Devia 2
A Manufacturer Knows That Their Items Have A Normally Distributed Lifespan With A Mean Of 9 2 Years And Standard Devia 2 (13.88 KiB) Viewed 13 times
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.2 years, and standard deviation of 1.4 years. If you randomly purchase 25 items, what is the probability that their mean life will be longer than 9 years? P(9)= 0.76 Submit Question X
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