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Some power plants are located near rivers or oceans so that the available water can be used for cooling the condensers. As part of an
Some power plants are located near rivers or oceans so that the available water can be used for cooling the condensers. As part of an environmental impact study, suppose a power company wants to estimate the effect on water temperature of the plant discharge. If the sampling technique has a standard deviation of 3.5C, how many water samples must be taken at each site to estimate the true effect within 0.4C with 95% confidence?
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