A soft-drink machine can be regulated so that it discharges an average of ? oz. per cup. If the ounces of fill are Normally distributed with a

A soft-drink machine can be regulated so that it discharges an average of ? oz. per cup. If the ounces of fill are Normally distributed with a standard deviation of 0.4 oz., what value should ? be set at so that 98% of 6-oz. cups will not overflow?