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Mathematics, 11.04.2020 03:25, msladestiny16
A particular psychological test is used to measure need for achievement. The average test score for all university students in Oklahoma is 115. A university in southern Oklahoma estimates the mean test score for a sample of n students to be 110 and constructs a confidence interval based on their scores. Which of the following statements about the confidence interval is always true?
A. The resulting interval will contain 115.
B. The 95% confidence interval for n = 100 will be more narrow than the 95% confidence interval for n = 50.
C. For n = 100, the 95% confidence interval will be wider than the 90% confidence interval.
B and C
A and C
B only
All three are true.
C only
A and B
A only
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Answers: 3
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