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04-12-2019
Mathematics

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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.

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04-12-2019

Answer:

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

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