The University of Maryland Medical Center considers "low birth weights" to be those that are less than 5.5 lb or 2495 g. Birth weights are normally distributed with a mean of 3152.0 g and a standard deviation of 693.4 g (based on Data Set 4 "Births" in Appendix B).
a. If a birth weight is randomly selected, what is the probability that it is a "low birth weight"?
b. Find the weights considered to be significantly low, using the criterion of a birth weight having a probability of 0.05 or less.
c. Compare the results from parts (a) and (b).