Ask a New Question

Question

How large a sample should be taken if the population mean is to be estimated with 99% confidence to within $72? The population has a standard deviation of $800.

16 years ago

Answers

DrBob222
mu = bar x +/- 2.58(sigma/sqrt N)
mu is the population mean.
bar x is the average.
2.59 gives the 99% confidence interval.
sigma is standard deviation. N is the number of sample. Solve for N.
16 years ago

Related Questions

How large a sample should be taken if the population mean is to be estimated with 99% confidence to... How large a sample should be surveyed to estimate the true proportion of college students who do lau... How large a sample will we need to be able to assert with probability 0. 90 that the sample mean wil... How large a sample should be taken if the population mean is to be estimated with 95% confidence to... How large a sample would be needed to form a 90% confidence interval for the mean nicotine content o... How large a sample should be selected to provide a 95% confidence interval with a margin of error of... How large a sample should be taken if the population mean is to be estimated with 95% confidence to... How large a sample should be taken if the population mean is to be estimated with 90% confidence t... How large does a sample have to be to calculate a confidence interval? (a) How large a sample must be drawn so that a 95% confidence interval for will have a margin of er...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use