- 8 A Coach Uses A New Technique In Training Middle Distance Runners The Times For 9 Different Athletes 8 To Run 800 Me 1 (26.94 KiB) Viewed 23 times
8) A coach uses a new technique in training middle distance runners. The times for 9 different athletes 8) to run 800 me
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8) A coach uses a new technique in training middle distance runners. The times for 9 different athletes 8) to run 800 me
8) A coach uses a new technique in training middle distance runners. The times for 9 different athletes 8) to run 800 meters before and after this training are shown below. Athletel A B C D E F G H 1 Time before training (seconds) 115.2 120.9 108.0 1124 107.5 119.1 121.3 110.8 122.3 Time after training (seconds) 116.0 119.1 105.1 111.9 109.1 115.2 118.5 110.7 120.9 Construct a 99% confidence interval for the mean difference of the "before" minus 'after times. A) -0.54 < d < 2.98 B) -0.76 < d < 3.20 C) -0.82 < d < 3.26 D) -0.85 < d < 3.29 2
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