Drinks are prepared and arranged on a table for a party. The probability that a drink is grape juice is 0.3. The probability that a drink has a straw is 0.3. The probability that a drink is grape juice and has a straw is 0.1. Use the addition rule to determine the probability that a drink is grape juice or has a straw. Enter your answer as a decimal, rounded to the nearest tenth, like this: 0.4

Question

Sariah Foster

Mathematics

20 January, 11:33

Drinks are prepared and arranged on a table for a party. The probability that a drink is grape juice is 0.3. The probability that a drink has a straw is 0.3. The probability that a drink is grape juice and has a straw is 0.1. Use the addition rule to determine the probability that a drink is grape juice or has a straw. Enter your answer as a decimal, rounded to the nearest tenth, like this: 0.4

+4

Answers (1)

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Jalen Bryan · Answer 1

0.5

Step-by-step explanation:

P (grape or straw) = P (grape) + P (straw) - P (grape and straw)

P (grape or straw) = 0.3 + 0.3 - 0.1

P (grape or straw) = 0.5