Question 20 of 25 (2 points) 6.2 Section Exercise Newborn elephant calves usuall

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Question 20 of 25 (2 points) 6.2 Section Exercise Newborn elephant calves usually weigh between 200 and 250 pounds until October 2006, when an Asian elephant at the Houston (Texas) Zoo gave birth to a male calf weighing in at a whopping 384 pounds! Mack (ike 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 weight for newborn elephant calves is 228 pounds with a standard deviation of 49 pounds. what is the probability of a newborn weighing at least 384 pounds? Assume that weights of newborne and final answer to 4 decimal places. Source: www.houstonzoo.org The probability that a newborn elephant weighs at least 384 pounds is .

Explanation / Answer

here test statistic z =(X-mean)/std deviation =(384-228)/49=3.18

hence Probability =P(Z>3.18) =0.0007

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