SOLUTION: Newborn elephant calves usually weigh between 200 and 250 pounds. Until October 2006, when an Asian elephant at the Houston Zoo gave birth to a male calf in at 384 pounds. Mack is

Algebra ->  Probability-and-statistics -> SOLUTION: Newborn elephant calves usually weigh between 200 and 250 pounds. Until October 2006, when an Asian elephant at the Houston Zoo gave birth to a male calf in at 384 pounds. Mack is       Log On


   



Question 1081873: Newborn elephant calves usually weigh between 200 and 250 pounds. Until October 2006, when an Asian elephant at the Houston Zoo gave birth to a male calf in at 384 pounds. Mack is believed to be the heaviest elephant calf ever born.
If, indeed the mean weight for newborn elephant calves is 220 pounds with a standard deviation of 43 pounds, what is the probability of a newborn weighing at least 384 pounds. Assume the weights of newborn elephants are normally distributed.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
z score=(x-mean)/sd=(384-220)/43=164/43=3.81
probability z >=3.81=0.000068