Calculate the lower and upper limits of the 95% confidence interval for a sample of N = 25 with a mean 
= 10.50 and standard deviation (s) = 4.16.
a. (8.83, 12.17)
b. (8.78, 12.22)
c. (8.17, 12.83)
d. (7.59, 13.41)
b. (8.78, 12.22)
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