A sharpshooter can hit the target with a probability p=0.75.
a) What is the probability that out of 10 shots she misses them all?
b) Find the probability that out of 10 shots she gets the target at least once.
Success: p = 0.75
Fail: q = 1 - p = 0.25
a) Prob of missing all 10 shots = q10 ≈ 9.5*10-7
b) Prob of at least one success = 1 - prob of no successes = 1 - q10.