Explore BrainMass

# Normal Distribution and Significance Levels True of False

Not what you're looking for? Search our solutions OR ask your own Custom question.

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

True or false:

A retailer wants to estimate with 99% confidence the number of people who buy at his store. A previous study showed that 15% of those interviewed had shopped at his store. He wishes to be accurate within 3% of the true proportion. The minimum sample size necessary would be 940.

https://brainmass.com/statistics/normal-distribution/normal-distribution-significance-levels-true-false-6295

#### Solution Preview

The statement is false. To get the minimum sample size we could use the following formula:

n = ((p*(1-p)*z)/m)^2

Where 'n' is the required ...

#### Solution Summary

The normal distribution and significance levels are examined. The minimum sample size which is necessary are determined. The solution answers the question(s) below.

\$2.49