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The quarterly returns of a group of 59 mutual fund with the mean of 3.6% and standard deviation of 5.3% can be modeled by a normal model. based on the model N(0.036, 0.053), what are the cutoff values for the
a) a highest 10% of these funds? b)lowest 20%? c)middle 40%? d) higest 80%?
Select the correct choice
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If there is one-year warranty on the equipment, what proportion of the customers will actually make a valid warranty claim?
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