Confidence interval is from what to what?

work Assignment Chapter 10 i Saved W Exercise 10-25 Algo The following table contains Information on matched sample values whose differences are normally distributed. (You may find It useful to reference the appropriate table: z table or t table) ook Number Sample 1 Sample 2 17 19 N H int 11 12 22 21 ences D W 20 19 17 19 14 19 18 17 19 22 Let the difference be defined as Sample 1 - Sample 2. a. Construct the 95% confidence Interval for the mean difference up. (Negative values should be Indicated by a minus sign. Rou es a decimal places and final answers to 2 decimal places.)