how do i derive a confidence interval how do we derive confidence intervals from the pivotal statistic how does the pivotal statistic work how to derive a confidence interval from an f distribution how to derive confidence interval in pivotal statistic how to derive confidence intervals how to derive confidence interval in f distribution how to derive confidence interval from f how to derive a confidence interval how to obtain confidence interval from the pivotal data confidence intervals in statistics confidence intervals f distribution how to derive confidence intervals how to derive a confidence interval on an f distribution how to derive a confidence interval how to derive confidence interval from standard deviation how to derive confidence interval from f distribution which of the following is an example of confidence intervals? pivotal statistic how to calculate the confidence intervals how to derive confidence intervals from f distribution