Show me how to solve the problem Newborn elephant calves usually weigh between 200 and 250 pounds-until October 2006, that is. An Asian elephant at the Houston (Texas) Zoo give birth to a male calf weighing in at a whopping 384 pounds! Mack (like the truck) is believed to be the heaviest elephant calf ever born at a facility accredited by the Association of Zoos and Aquariums. If, indeed, the mean wight for newborn elephant calves is 225 pounds with a standard deviation of 45 pounds, what is the probability of a newborn weighing at least 384 pounds? Assume that the weighs of newborn elephants are normally distributed.