Question

John was studying how far the UMN students travelled to take the class on campus. Let W be the distance travelled (measured in miles). A sample of size 25 was collected. He calculated the following statistics: W 3.8 Please calculate the 90% Confidence Interval for μ , the mean distance traveled by UMN students to come to campus. Suppose that the sample size 25 is NOT large enough for normal approximation (Hint: use t distribution). Note: You only need to provide the upper bound of the confidence interval to answer this questio.

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The upper bound has come out to be 4.134972.

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