Posted by **josh** on Wednesday, August 24, 2011 at 12:18pm.

A researcher is interested in studying people’s mean age in a certain region. If the population standard deviation is known to be 8 years and 1.5 year of error margin is allowed, find the minimum simple size the researcher needs to use, knowing that he is going to conduct his study using 95% confidence level.

## Answer this Question

## Related Questions

- statistics - a researcher is interested in studying people's mean age in a ...
- statistics - what are the mean and standard deviation of a sampling distribution...
- statistics - Ramdom sample of 41 car owners results in a mean of 7 years. ...
- statistics - A researcher wishes to estimate the mean amount of money spent per ...
- statistics - A researcher wishes to estimate the mean height of women aged ...
- social statistics - a smoking researcher is interested in estimating the average...
- Statistics - data from sample of 400 cases, variable has 95% confidence interval...
- Statistics - A population has a standard deviation of 15.2. How large a sample ...
- statistics - 1.A magazine reported that 6% of Americans read the news paper ...
- Statistics - 1. A study of 40 people found that they could do on the average15 ...