The mean of 21 reading scores drawn from a population with a standard deviation of 6.98 is 14.53. Therefore, the 95% confidence interval around m is _______.
a. [10.94, 18.12]
b. [11.54, 17.52]
c. [–6.31, 35.37]
d. [–10.52, 39.58]
Ans: B
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