Question

10- 6% of all radios manufactured are defective, find the probability of selecting two radios in a row that are defective. P (d1 and d2)

Answer 1

Selecting two radios in a row

Let's imagine that the number of all the radios manufactured is 100.

Then 6 of them are defective.

We know that the probability of selecting one radio in a row that is defective is

P(D) = 6/100 = 0.06

We know that the probability of selecting two defective radios in a row is

P(D)*P(D) = 0.06 * 0.06 = 0.0036

Answer: the probability of selecting two radios in a row that are defective is