a newborn baby has extremely low birth weight (elbw) if it weighs less than 1000 grams. a study of the health of such children in later years examined that such children's weight follows a normal distribution with a mean of 810 grams and a standard deviation of 40 grams. what is the mean and standard deviation of the sampling distribution of the average weight for simple random samples (srs) of 100 children who had been born with elbw?
