1. Kelly and Veronica are two teachers in a math class whoattend class independently of one another. For Friday classes,there is a .70 probability that kelly will come to class, whilethere is a .40 probability that Veronica will come to class. For aFriday class, what is the probability neither Kelly nor Veronicawill be there?
2. The weights of newborn baby twin girls have anapproximately normal distribution with a mean of 8.0 pounds and astandard deviation of 1.5 pounds. A doctor tells the family thatone of the baby twin girl has a weight at the 30th percentile.Which of the following is closest to this baby's weight? (show workplease)
A, 7.2
B 8.5
C 7.7
D 8.9
