Answer a-4 and b-1

Return to question 10 An experimental surgical procedure is being studied as an alternative to the old method. Both methods are considered safe. Five surgeons perform the operation on two patients matched by age, sex, and other relevant factors. with the results shown. The time to complete the surgeryr [in minutes) is recorded. 2 point"; Surgeon 1 Surgeon 2 Surgeon 3 Surgeon 4 Surgeon 5 old way 38 54 25 35 59 New way 26 35 36 31 55 Click here for the Excel Data File {3-1) Calculate the difference between the new and the old ways for the data given below. Use a = .050. {Negative values should be indicated by a minus sign.) X1 X2 X1 - X2 Surgeon 01d Way New Way Difference l 38 26 12 54 35 19 25 35 11 35 31 4 UI-h-wN 59 55 4 Return to question 10 (a-2) Calculate the mean and standard deviation for the difference. (Round your mean answer to 1 decimal place and standard deviation answer to 4 decimal places.) 2 Mean 5.6 points Standard Deviation 11. 1937 (a-3) Choose the right option for Ho: Ha S 0; H1: Hd > 0. O Reject if tcalc > 2.131846786 O Reject if tcalc