which statement to use to compute confidence intervals how to calculate confidence interval r how can i determine sample size how to calculate sample size by using confidence intervals how to do confidence intervals r how to compute sample size r is there a sample size? what package enables the use of confidence intervals in r r __________ is used to compute sample size by confidence interval for differences in proportions. how to calculate sample size r calculating sample size how to find sample size what is r package to compute ci when to use confidence intervals in r how do i calculate a sample size what is the sample size for an equation in r how to do a r test with confidence intervals how to figure sample size what is sample size in r what is the use of confidence interval in r