Mathematics, 28.05.2021 17:20, bbtor

A researcher wishes to see if the average number of sick days a worker takes per year is less than 5. A random sample of 32 workers at a large department store had a mean of 5.6 days. The standard deviation of the population is 1.2 days. Is there enough evidence to support the researcher's claim at α = 0.01.

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A researcher wishes to see if the average number of sick days a worker takes per year is less than 5...