Population standard deviation
Suppose a random smaple of size 36 is drawn from a population with a mean of 278,. If 86% of the time the sample mean is less than 280, what is the population standard deviation?
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The turbine and pump have isentropic efficiencies of 88%. For the cycle, determine the rate of heat transfer to the working fluid passing through the steam‚ generator, in Btu/h.
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