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An elevator has a placard stating that the maximum capacity is 1376 —8 passengers.​ So, 8...

An elevator has a placard stating that the maximum capacity is 1376 —8 passengers.​

So, 8 adult male passengers can have a mean weight of up to 1376/8=172 lb.

If the elevator is loaded with 8 adult male​ passengers, find the probability that it is overloaded because they have a mean weight greater than 172 lbs.

(Assume that weights of males are normally distributed with a mean of 174 lb and a standard deviation of 28 lb​.)

Does this elevator appear to be​ safe?

The probability the elevator is overloaded is _______

​(Round to four decimal places as​ needed.)

Math   Statistics-And-Probability   
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Answer #1

Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(-0.2020, TRUE)" to find the probability.

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