Hello, I was told by my lecturer that I need to do some T-tests on my data in order to find out if it is significant or not. The data is basically student's grades and I am trying to prove that intrinsic students achieve higher grades in comparison to extrinsic students.

So I used an online calculator to calculate the T test on this data:

Data 1 (extrinsic students):

49.5

52

55

55.5

55.5

59

59.5

60

60.5

63.5

65.75

66

67

69.5

76.5

78

78

Data 2: (Intrinsic students)

55

59.5

60

63.5

64

65

65.5

68

69

72.5

76.5

76.5

77.5

77.5

80

82

83

For this data I set it as of unequal variance and a 2 tail test. I am not too sure If i used the right tail test. The following figure was returned:

Online calculator: = 0.01967

Excel: 0.009833876

I have no idea what either of these numbers mean, can anyone help?

Thanks,

Sean