please show work

15) c = 0.90, s = 2.5, n = 30 18. c = 0.975, $ 17. c = 0.65, s = 1.5, n = 50 Matching In Exercises 19-22, match the level of confidence c with its representation on the number line, given x = 57.2, s = 7.1, and n = 50. 20. c = 0.90 212 c = 0.95 22. c = 0.98 19.)c = 0.88 (b) 57.2 59.2 (a) 54.9 55.2 57.2 59.5 54 55 56 57 58 59 60 54 $5 56 57 58 59 60 (c) 55.6 57.2 58.8 (d) 55.5 57.2 . 58.9 + + + 54 55 56 57 58 59 60 54 55 56 57 58 59 60