Mathematics, 18.06.2020 21:57 teFazoe9550
The concentration of mercury in a lake has been monitored for a number of years. Measurements taken on a weekly basis yielded an average of 1.20 mg/m3 (milligrams per cubic meter). Following an accident at a smelter on the shore of the lake, there was some concern that the mean mercury concentration might have increased and 15 measurements of mercury concentrations were taken. Assuming that the standard deviation of the mercury concentration is .32 mg/m3, calculate the power of the test to detect mercury concentration of 1.48 mg/m3.
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The concentration of mercury in a lake has been monitored for a number of years. Measurements taken...
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