Question

The probability of hitting a target in any shot is 0.2. If 10 shots are fired, find the probability that the target will be hit at least twice.

Answer 1

a\q 0.2×10=2
so probability is 2/5

Answer 2

Answer:

1  - (0.8)⁹

Step-by-step explanation:

The probability of hitting a target in any shot is 0.2. If 10 shots are fired, find the probability that the target will be hit at least twice.

The probability of hitting a target in any shot is 0.2

The probability of not  hitting a target in any shot is 1-0.2 = 0.8

probability that the target will be hit at least twice. = 1 - Hit once - Hit never

Probability of Hit once = 0.2 * (0.8)⁹

Probability of Hit Never = (0.8)¹⁰

probability that the target will be hit at least twice = 1 - 0.2 * (0.8)⁹ - (0.8)¹⁰

= 1 -  (0.8)⁹(0.2 + 0.8)

= 1  - (0.8)⁹

= 0.865782272