Confidence Interval for paired difference

Confidence interval for Difference of means
  Sample 1 Sample 2
Enter Data (Separated by comma ,)
Confidence Level ($1-\alpha$)
Number of pairs of Obs. (n):
Mean of Diff.: $\overline{d}$
Std. Dev. of D: $s_d$
Standard Error of $\overline{d}$
Degrees of Freedom:
t critical value:
Margin of Error $E$
Lower Limit
Upper Limit

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