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Exercise 5. Elapsed time. For a random sample of 55 students the mean time to complete...

Exercise 5. Elapsed time.

For a random sample of 55 students the mean time to complete a set of exercises was 15.55 minutes. Assume that σ = 2.3 minutes and α = 0.05. A researcher claims that the population mean time to complete a set of exercises is 15 minutes. Is there enough evidence to reject the researcher’s claim?

Math   Statistics-And-Probability   
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