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Unformatted text preview: MLE:C = c B MLE is an unbiased estimator. (5) Which of these four estimators is the best (or the one you would recommend). Explain why? Q2: The viscosity of two different brands of car oil are measured and the following data resulted: Brand 1: 21.24, 21.16, 20.66, 21.44, 20.88, 21.48 Brand 2: 21.00, 21.04, 21.16, 21.24, 21.10, 21.02, 21.06 (1) Test the hypothesis that the mean viscosity of the two brands is equal, assuming that the populations have normal distributions with equal variances. (2) Test the hypothesis that the populations have the same variances. (3) Based on the conclusion you have for part (2) do you consider your test in part (1) valid? If not, carry out the more appropriate test....
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This note was uploaded on 07/22/2009 for the course IEOR 165 taught by Professor Shanthikumar during the Summer '08 term at University of California, Berkeley.
 Summer '08
 SHANTHIKUMAR

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