An advertising firm offers a promotional package that includes for coffee mugs and five desk calendars each printed with the logo of your company and chipped in a display box in manufacturing process of the mugs results and products that have a weight of 6 ounces with a standard deviation of 2 oz the calendars are manufactured with a mean weight of 8 oz of standard deviation of 3 oz shipping boxes have a mean way to 3 oz and a standard deviation of 1 ounce assume the weights of the items are independent and normally distributed what are the mean and standard deviation of the weight of the promotional package
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