Question: 9.83 Breaststroke, continued Refer to Exercise 9.82. a. Construct a 99% confidence interval for the dif- ference in the average number of metres swum by

9.83 Breaststroke, continued Refer to Exercise 9.82.

a. Construct a 99% confidence interval for the dif- ference in the average number of metres swum by breaststroke versus individual medley swimmers.

b. How much longer do pure breaststroke swimmers practice that stroke than individual medley swim- mers? What is the practical reason for this difference?

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