The age that women in Virginia decide to get married for the first time is normally distributed with an average of 26.3 years an
d a standard deviation of 3.1 years. Suppose that 25 Virginian women are randomly selected and asked about their age at the beginning of their first marriage, find the probability that the sample mean age is between 25 and 28 years a.0.9821
b.0.6400
c.0.9790
d.0.9969
