# A random sample of size 81 is drawn from a population with a standard deviation of 12.If

## Question:

A random sample of size 81 is drawn from a population with a standard deviation of 12.If only 18% of the time a sample mean greater than 300 is obtained, what is the mean of the population?

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**Related Book For**

## Business Statistics For Contemporary Decision Making

**ISBN:** 978-1118749647

8th edition

**Authors:** Black Ken