what is the confidence interval for each variance how do you find the degrees of freedom how to find the degrees of freedom how do you find the degree of freedom how to find degrees of freedom how to find the degrees of freedom finding the degrees of freedom for a confidence interval for the difference of two means how to find the degrees of freedom of a confidence interval how to find degree of freedom finding the degrees of freedom for a confidence interval for the difference of two samples what is the confidence interval for a difference of two samples what is the degree of freedom for a confidence interval what is the degree of freedom of a confidence interval how to find degree of freedom for the difference of two samples using df how to find the degrees of freedom for the confidence interval? how to find the degrees of freedom what is the confidence interval for the difference of two samples how to find degrees of freedom for a confidence interval in a sample what is the degree of freedom? how to find the degrees of freedom of the confidence interval