Calculate the lower and upper limits of the 95% confidence interval for a sample with a mean = 28.59 and a population standard error of the mean = 2.29.

a. (24.10, 33.08)
b. (24.81, 32.37)
c. (22.68, 34.50)
d. (24.34, 32.84)


a. (24.10, 33.08)

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