find the mean range

Homework: Ch 6S Practice Question 9. Problem 65.26 Part 2 of 9 HW Score: 18.87%, 10 of 53 points Points: 0 of 10 Save West Battery Corp, has recently been receiving complaints from retailers that its 9-volt batteries are not lasting as long as other name brands. James West, head of the TOM program at West's Austin plant, believes there is no problem because his batteries have had an average life of 45 hours, about 10% longer than competitors' models. To raise the lifetime above this level would require a new level of technology not available to West. Nevertheless, he is concerned enough to set up hourly assembly line checks. Previously, after ensuring that the process was running properly, West took samples of 5 9-volt batteries for 25 test to establish the standards for control chart imits. Those 25 tests are shown in the following table: ol Sample Data Sample Data Y 4 46 42 3 35 48 5 41 54 24 22 44 41 33 45 31 50 Hour Sample Taken 1 45 40 44 49 44 55 30 46 38 10 66 11 53 12 51 13 34 16 30 20 28 48 51 58 35 58 51 38 119wu % Now WN 3 45 55 44 47 59 47 45 49 42 45 58 43 54 &&&&8*9S hhmm 51 33 56 28 62 47 41 48 48 65 52 31 53 47 42 50 52 36 39 36 32 56 40 &&&&&&- s Huanm Hour Sample Taken 14 15 16 17 18 19 20 21 22 23 24 25 46.4 41.8 41.0 47.8 41.B 51.6 394 46.4 41.6 45.8 46.0 47.2 46.6 ANNA RoaRA 24 wr 2 52 38 43 33 46 48 44 41 34 42 44 45 48 52 28 53 51 43 36 53 45 44 46 46 X 44.8 48.6 43.4 41.2 47.8 46 6 43.0 43.6 43.6 43.4 44.6 484 4**8**8* 42 46 45 45 34 40 44 45 57 S N a c = 3 x 8 8 8 8 s| 39 42 41 39 38 40 16 SISE 42 30 26 18 31 45 44 47 47 12 This exercise contains only parts a and b. a) For the given data, the x 44.896 hours (round your response to three decimal places) For the given data, mean range - hours (round your response to wo decimal places)