Belief in an afterlife. A national poll conducted by The New York Times (May 7, 2000) revealed that 80% of Americans believe that after you die, some part of you lives on, either in a next life on earth or in heaven. Consider a random sample of 10 Americans and count x, the number who believe in life after death.
a. Find P(x = 3).
b. Find P(x ≤ 7).
c. Find P(x > 4).
