A sample of n = 4 scores is selected from a population with an unknown mean.The sample has a mean of M = 40 and a variance of s2 = 16.Which of the following is the correct 90% confidence interval for μ?
A) μ = 40 ± 2.353(4)
B) μ = 40 ± 1.638(4)
C) μ = 40 ± 2.353(2)
D) μ = 40 ± 1.638(2)
Correct Answer:
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