An article in Medicine and Science in Sports and Exercise "Maximal Leg-Strength Training Improves Cycling Economy in Previously Untrained Men," (2005, Vol. 37 pp. 131-1236) studied cycling performance before and after eight weeks of leg- strength training. Seven previously untrained males performed leg-strength training three days per week for eight weeks (with four sets of five replications at 85% of one repetition maximum). Peak power during incremental cycling increased to a mean of 315 watts with a standard deviation of 16 watts. Construct a 99% two-sided confidence interval for the mean peak power after training. Assume population is approximately normally distributed. Round the answers to 2 decimal places. <με i 298.05 i 331.95

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An article in Medicine and Science in Sports and Exercise "Maximal Leg-Strength Training Improves Cycling Economy in
Previously Untrained Men," (2005, Vol. 37 pp. 131-1236) studied cycling performance before and after eight weeks of leg-
strength training. Seven previously untrained males performed leg-strength training three days per week for eight weeks
(with four sets of five replications at 85% of one repetition maximum). Peak power during incremental cycling increased to a
mean of 315 watts with a standard deviation of 16 watts. Construct a 99% two-sided confidence interval for the mean peak
power after training. Assume population is approximately normally distributed.
Round the answers to 2 decimal places.
i 298.05
<μ< i
331.95
Transcribed Image Text:An article in Medicine and Science in Sports and Exercise "Maximal Leg-Strength Training Improves Cycling Economy in Previously Untrained Men," (2005, Vol. 37 pp. 131-1236) studied cycling performance before and after eight weeks of leg- strength training. Seven previously untrained males performed leg-strength training three days per week for eight weeks (with four sets of five replications at 85% of one repetition maximum). Peak power during incremental cycling increased to a mean of 315 watts with a standard deviation of 16 watts. Construct a 99% two-sided confidence interval for the mean peak power after training. Assume population is approximately normally distributed. Round the answers to 2 decimal places. i 298.05 <μ< i 331.95
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Step 1: Introduction

The random variable is peak power.

We have to construct 99% two-sided confidence interval for the mean peak power after training.

This is One sample t-interval since the population standard deviation is not known.

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