A block is randomly selected out of a toy box. The probability of selecting a red block is 0.25. The probability of selecting a block that is both a red block and has a stripe is 0.05.

What is the probability of selecting a red block with a stripe given the toy is a red block?

Enter your answer as a decimal in the box.

Question

Mathematics

Maggie

28 August, 12:38

A block is randomly selected out of a toy box. The probability of selecting a red block is 0.25. The probability of selecting a block that is both a red block and has a stripe is 0.05.

What is the probability of selecting a red block with a stripe given the toy is a red block?

Enter your answer as a decimal in the box.

+4

Answers (1)

Know the Answer?

Jerry · Answer 1

0.2

Step-by-step explanation:

Conditional probability:

P (A | B) = P (A & B) / P (B)

P (striped | red) = P (striped & red) / P (red)

P (striped | red) = 0.05 / 0.25

P (striped | red) = 0.2