The winning team's scores in 7 high school basketball games were recorded. If the sample mean is 10.3 points and the sample standard deviation is 0.10 points, find the 98% ccof the true mean?
a. (10.18, 10.42)
b. (10.06, 10.54)
c. (10.26, 10.34)
d. (10.21, 10.39)