A Sample of N = 4 Scores Is Selected from a Population

question 22

Multiple Choice

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)

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