Use below for 99% CI

6. Report the following values for n = 15

n: 15 df = 14 S.E. = 0.88

mean: 67.13 Std Dev: 3.42 t: 2.98

CL lower: 64.51 CL higher: 69.76 Range 5.25

7. Continuing from 1, report the values forn = 30

n: 30 df = 29 S.E. = 0.56

mean: 65.75 Std Dev: 3.09 t: 2.76

CL lower: 64.19 CL higher: 67.30 Range 3.11

8. Continuing from 1, report the values forn = 55

n: 55 df = 54 S.E. = 0.43

mean: 65.94 Std Dev: 3.16 t: 2.67

CL lower: 64.81 CL higher: 67.08 Range 2.27

9. Continuing from 6, report the values for the entire sample

n: 1200 df = 1199 S.E. = 0.09

mean: 65.68 Std Dev: 3.18 t: 2.58

CL lower: 65.44 CL higher: 65.91 Range 0.47