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Use the following information to answer the next four questions. A sprint duathlon consists of a 5 km run, a 20km bike ride, followed by another 5 km run. The mean finish time of all participants in a recent large duathlon was 1.67 hours with a standard deviation of 0.25 hours. Suppose a random sample of 30 participants in the 40-44 age group was taken and the mean finishing time was found to be 1.62 hours with a standard deviation of 0.40 hours.
1) In this example, the numerical values of 1.67 hours and 0.25 hours are .
(a) estimates(b) statistics(c) parameters(d) unbiased estimators
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