B C D G H I J K Exercise 6: Mary Jo Fitzpatrick is the vice president for Nursing Services at St. Luke's Memorial Hospital. Recently she noticed in the job postings for unionized nurses offered different wages than for non-unionized. She decided to research the notion that wages were different. Using the .04 significance level, are wages different? Group Mean Wage Sample Size Union $20.75 $2.25 40 Non-union $19.80 $1.90 45 (a) Ho: (b) Reject H . when z is outside (c) Z = (d) Ho is (e) 76 77 78 79 80 Sheet1 Sheet2 Sheet3 Ready Type here to search h