1. Assume newborn (full term) infant weight is normally distributed with a mean weight of 3087 grams and standard deviation of 454 grams. Calculate the following probabilities that a full term infant weight will: A. Weight no more than 2633 grams. B. Be at least two standard deviations above the mean weight C. That the average weigh of 4 infants will weight at least 3768 grams D. If 500 new born infants are randomly selected, approximately how many would weigh more than 3541 grams? 2. Gestation period of human pregnancies is approximately normally distributed with a mean of 266 days and a standard deviation of 16 days. Construct a 95% confidence interval for the duration of a normal pregnancy