Find Required Sample Size Ti 84. Where z 1645 for a confidence level α of 90 p proportion expressed as a decimal e margin of error. Scroll down to DiagnosticOn and press ENTER.
Here is the ZAREA83P program. At the prompts enter the sample mean x sample standard deviation s x and the sample size n. Jun 17 2010 how do you use ti-84 plus to determine the sample size for the estimation of mean.
This can be done using the online sample size calculator above or with paper and pencil.
Population standard deviation 4. Laura Schultz The 1-PropZInt command is used to construct a confidence-interval estimate of a population proportion p or percentage. Then p ress ENTER once more. Now that youve got answers for steps 1 4 youre ready to calculate the sample size you need.
