Birth Weights of Babies Born to Full-Term Pregnancies Follow Roughly

Multiple Choice

Birth weights of babies born to full-term pregnancies follow roughly a Normal distribution.At Meadowbrook Hospital,the mean weight of babies born to full-term pregnancies is 7 pounds with a standard deviation of 14 ounces (1 pound = 16 ounces) . Dr.Watts (who works at Meadowbrook Hospital) has four deliveries (all for full-term pregnancies) coming up during the night.Assume that the birth weights of these four babies can be viewed as a simple random sample.What is the probability that all four babies will weigh more than 7.5 pounds?

A) 0.0065
B) 0.1265
C) 0.2839
D) 0.4858