Grades on final exam in a statistic course
Suppose we know grades on final exam in a statistic course are normally distributed with a mean of 72 and standard deviation 15 so find the first,second, and third quartiles?
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A neon sign that requires a voltage of 12000 V is plugged into a 120 V wall outlet. What ratio of turns (primary/secondary) must the transformer have to power the sign?
The annual cost of operating a heat pump at year-end prices is R, with units of $/yr. Show that the uniform annual costs are?
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