Assume that a sample is used to estimate a population mean mu. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the population has a normal distribution. Round your answer to one more decimal place than the sample standard deviation.
95% confidence; n = 21; x-bar = 0.16; s = 0.16

Question

Assume that a sample is used to estimate a population mean mu. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the population has a normal distribution. Round your answer to one more decimal place than the sample standard deviation. 
95% confidence; n = 21; x-bar = 0.16; s = 0.16

anonymous · Answer

$$E=(1.96(0.16))/\sqrt{21}$$ = 0.068

toxicsugar22 · Answer

hey meth.party can u help me after her

anonymous · Answer

I may have done this wrong, Are you looking for the margin of error of the mean or that of the proportion?

anonymous · Answer

margin of error

anonymous · Answer

The error of what exactly?

anonymous · Answer

of population mean mu

anonymous · Answer

If thats what is sought then what I did above should be correct. What course is this?

anonymous · Answer

statistics thank you for all of your help so far

anonymous · Answer

No problem!

anonymous · Answer

how about this one... Find the minimum sample size. You want to be 95% confident that the sample variance is within 20% of the population variance.