Answer
a. $0.242$
b. $0.547$
c. $0.306$
Work Step by Step
$p=0.53, n=10$
a. Exactly one-half have some college education
$P(X=5)=_{10}C_50.53^50.47^5=0.242$
b. At least 5 do not have any college education
$P(X\leq5)=0.547$
c. Fewer than 5 have some college education
$P(X\leq4)=0.306$
