The weekly earnings of all families in a large city have a mean of $780 and a standard deviation of $145 Find the probability that a 36 randomly selected families will a mean weekly earning of a ) Less than $750 (5 points) Are we allowed to use a standard normal distribution for the above problem ...

Standard normal variable a 010723 Sa Let X be the weekly earni ...

The weekly earnings of all families in a large city have a mean of $780 and...

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Introductory Statistics

ISBN: 978-0470904107

8th edition

Authors: Prem S. Mann

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