Find the critical value, t, which you multiply by the

Last updated: 7/12/2022

Find the critical value, t, which you multiply by the standard error to calculate the confidence interval for mu. (a) 90% confidence interval for a mean with 7 observations. t = (b) 95% confidence interval for a mean with 12 observations. t = (c) 99% confidence interval for a mean with 21 observations.