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What is the probability a randomly selected group

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Reference no: EM132474183

μ = 16477.64 seconds

σ = 2247.55 seconds

n = 35 runner

1. What is the probability a randomly selected group of n runners will have a mean completion time of less than 4.5 hours?

2. What is the probability a randomly selected group of n runners will have a mean completion time of over 5 hours?

3. What is the 90th percentile for the mean value of n runners, for the variable you selected?

4. For the calculations you have completed above, explain why it was necessary for us to hold the sample size n constant?

Reference no: EM132474183

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