Hi can you help me with the following questions for the data below? LOOK AT PICTURE ATTACHED

1) Can you show me how to calculate risk level?

2) What is the best statistical test to use - z-test? correlation test? t-test for dependent or independent levels?

3) I need help finding the degrees of freedom. Can you show me how to approach this?

DATA :

"Hit" group

38 37 37 36 35 35 34 34 33 31 30 30 30 30 25 25 25 25 24 20

Mean:

SD:

"smashed into" group

55 55 50 50 50 50 45 45 45 45 45 43 42 41 41 40 40 37 36 35

Mean:

SD:

"Hit" group "smashed into group" 38 7.3 53.29 55 10.5 110.25 37 6.3 39.69 55 10.5 110.25 37 6.3 39.69 50 5.5 30.25 36 5.3 28.09 50 5.5 30.25 35 4.3 18.49 50 5.5 30.25 35 4.3 18.49 50 5.5 30.25 34 3.3 10.89 45 0.5 0.25 34 3.3 10.89 45 0.5 0.25 33 2.3 5.29 45 0.5 0.25 31 0.3 0.09 45 0.5 0.25 30 -0.7 0.49 45 0.5 0.25 30 -0.7 0.49 43 -1.5 2.25 30 -0.7 0.49 42 -2.5 6.25 30 -0.7 0.49 41 -3.5 12.25 25 -5.7 32.49 41 -3.5 12.25 25 -5.7 32.49 40 -4.5 20.25 25 -5.7 32.49 40 -4.5 20.25 25 -5.7 32.49 37 7.5 56.25 24 -6.7 44.89 36 -8.5 72.25 20 -10.7 114.49 35 -9.5 90.25 516.2 635 mean 30.7 mean 44.5 variance 27.16842 variance 33.42105 sd 5.212334 sd 5.781094