The costs, in dollars, per load of laundry were measured for samples of high-efficiency detergents like those
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The costs, in dollars, per load of laundry were measured for samples of high-efficiency detergents like those used in many front-loading washing machines and standard detergents. The results were as follows.
Can you conclude that the median cost per load for high-efficiency detergents differs from the median cost per load for standard detergents? Use the α = 0.05 level of significance.
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