b) 9 randomly selected 2-year-old male chipmunks will live to be 3 years old.
Answer b: 0.92060
c) probability that at least one of nine randomly selected 2-year-old male chipmunks will not live to be 3 years old
Probability that one randomly selected 2-year-old male chipmunk will NOT live to be 3 years old:
Probability that none of the nine will live to be 3 years old is:
Probability that at least one of nine randomly selected 2-year-old male chipmunks will not live to be 3 years old:
Answer c: it approximates to 1