Find the confidence interval for a Related-Samples t-test (Ch.11), given the following info: Level of confidence = 95% Before and After scores = see table below SSD (SS of the difference scores) = 2.75 Hint: as you're doing calculations, don't round any numbers in your calculations to less than two decimal places, or your final answer may be too rounded for you to be able to tell which answer below is correct. Person Before X1 After X2 Difference (D = X2- X1) A 15 22 +7 B 18 23 +5 C 12 17 +5 D 17 23 +6 Group of answer choices 4.67 < D < 7.59 4.89 < D < 8.12 5.08 < D < 8.60 4.23 < D < 7.27