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Name: A researcher is testing the hypothesis that consuming a sports drink d
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Description: A researcher is testing the hypothesis that consuming a sports drink during exercise improves endurance. A sample of n = 50 college students is obtained and each student is given a series of three endurance tasks and asked to consume 4 ounces of the

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher is testing the hypothesis that consuming a sports drink during exercise improves endurance. A sample of n = 50 college students is obtained and each student is given a series of three endurance tasks and asked to consume 4 ounces of the drink during each break between tasks. The overall endurance score for this sample is M = 53. For the general population, without any sports drink, the scores for this task average μ = 50 with a standard deviation of σ = 12.

Can the researcher conclude that endurance scores with the sports drink are significantly higher than scores without the drink? Use a one-tailed test with α = .05.
Can the researcher conclude that endurance scores with the sports drink are significantly higher than scores without the drink? Use a two-tailed test with α = .05.
You should find that the two tests lead to different conclusions. Explain why.

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