6. A ski coach claims that she can train beginning skiers for 3 weeks so that at the end of the program they will finish a certain downhill course in less than 15 minutes. It was found that, when a random sample of ten skiers given the training, their mean time was 14.1 minutes with standard deviation of 1.4 minutes. On the basis of the evidence, is the true mean significantly less than 13.5 minutes? Use a = 0.025

MATLAB: An Introduction with Applications
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6. A ski coach claims that she can train beginning skiers for 3 weeks so that at the end of the
program they will finish a certain downhill course in less than 15 minutes. It was found that,
when a random sample of ten skiers given the training, their mean time was 14.1 minutes
with standard deviation of 1.4 minutes. On the basis of the evidence, is the true mean
significantly less than 13.5 minutes? Use a = 0.025
Transcribed Image Text:6. A ski coach claims that she can train beginning skiers for 3 weeks so that at the end of the program they will finish a certain downhill course in less than 15 minutes. It was found that, when a random sample of ten skiers given the training, their mean time was 14.1 minutes with standard deviation of 1.4 minutes. On the basis of the evidence, is the true mean significantly less than 13.5 minutes? Use a = 0.025
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