The manager wants to know whether the true average number of power tools rented/day is 25.0. If in a random sample of 36 days, bar x = 22.8 rentals with standard deviation = 6.9 rentals, test Ho: σ = 8.9 rental against HA: σ < 8.9 rental at 0.05 level of significance. What is the computed value and decision?

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Q: In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national…

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Q: In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national…

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