when to use f distribution in a confidence interval which confidence interval should we use f-distribution when building confidence intervals what does f mean why use the f distribution for confidence intervals why do we use f when building the confidence interval when calculating confidence interval what value should be used why use the f curve in confidence intervals what is the f distribution in confidence intervals when do we use z in confidence intervals? when building confidence interval, why do we not use t2 when do you need to use an f distribution what's the f distribution used for when is f distributed when do we use the f distribution why f distribution when building a standard confidence interval, why do you use the f curve? does the average confidence interval have two tails when building confidence intervals should the h band be used t/2. when building a confidence interval what value do we use for the f curve why would you use z2 in the confidence interval