At Center Hospital there is some concern about the high turnover of nurses. A survey was done to determine how long (in months) nurses had been in their current positions. The responses (in months) of 20 nurses were as follows. 2, 5, 7, 8, 8, 11, 12, 14, 20, 23, 23, 25, 26, 27, 28, 29, 31, 36, 36, 42 (a) Compute the x and s of the data. x= . (Round your answer to 2 decimal places.) s= . (Round your answer to 2 decimal places.) (b) Find the z-score of each of the following data value: x= 5, z= x= 7, z= x= 42, z= . (Strictly round your answer to 2 decimal places.) . (Strictly round your answer to 2 decimal places.) . (Strictly round your answer to 2 decimal places.)