Individual scores of a placement examination are normally
Individual scores of a placement examination are normally distributed with a mean of 84.2 and a standard deviation of 12.8.
If a random sample of size n = 20 is selected, find the probability that the sample mean will be less than 90.0.
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what is the solubility of O2 at an elevation of 12,000 ft where the atmospheric pressure is 0.657 atm? Assume the temperature is 25°C, and that the mole fraction of O2 in air is 0.209 at both 12,000 ft and at sea level.
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How and to what extent does peasant production represent exploitation? In which ways did it generate internal inequality? What were the consequences of “Southern African mining revolution”? Why did taxes fail to compel African peasants to
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