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Solution: Olympic Winners. Listed below are the winning times (in seconds) of men in the 100 -meter dash for consecutive summer Olympic games, listed in order

Question: Olympic Winners. Listed below are the winning times (in seconds) of men in the 100 -meter dash for consecutive summer Olympic games, listed in order by row. Assuming that these results are sample data randomly selected from the population of ail past and future Olympic games, test the claim that the mean time is less than 10.5sec10.5 \mathrm{sec}. What do you observe about the precision of the numbers? What extremely important characteristic of the data set is not considered in this hypothesis test? Do the results from the hypothesis test suggest that future winning times should be around 10.5sec10.5 \mathrm{sec}, and is such a conclusion valid?

12
11
11
11.2
10.8
10.8
10.6
10.8
10.3
10.3
10.3
10.4
10.5
10.2
10
9.95
10.14
10.06
10.25
9.99
9.92
9.96

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