For short distance flights, AVX airways provides three different choices on its snack menu—mixed nuts, potato chips, and cookies. The airline observes in the past that each snack is equally likely to...

For short distance flights, AVX airways provides three different choices on its snack

menu—mixed nuts, potato chips, and cookies. The airline observes in the past that each

snack is equally likely to be chosen. If there are 150 passengers on a particular flight,

what is the approximate probability that

a) At least 60 will choose mixed nuts?

b) Fewer than 60 will choose mixed nuts?