A small Belgian chocolate specialty candy maker ships chocolate truffles anywhere in the world. Past records indicate that the weight of orders is normally distributed. Suppose a random sample of 20 orders is selected and each is weighed. The sample mean was found to be 220 grams with a standard deviation of 28 grams. The standard error of the mean is O 6.3 grams 1.4 grams 20 grams 28 grams O .63 grams Stop sharing Hide