8. A group of 40 bowlers showed that their average score was 192 with a standard deviation of 8. Find the 95% confidence interval of the mean score of all bowlers.
A. (186.5, 197.5)
B. (188.5, 195.6)
C. (187.3, 196.1)
D. (189.5, 194.5)
E. (189.9, 194.1)
F. None of the above