The monthly demand for PacSun's mens light-washed jeans is a normally distributed random variable with mean 657 and standard deviation 50 . Find the value of X for the upper-bound of the middle 36%. (round up to the nearest pair of jeans). 634 1 681 707 The monthly demand for PacSun's mens light-washed jeans is a normally distributed random variable with mean 657 and standard deviation 50 . Find the value of X for the lower-bound of the middle 36%. (round up to the nearest pair of jeans). 680 −1 634 607

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