Pulsified333
  • Pulsified333
Question involving the selection of two apples from a bag of red and yellow apples without replacement. Assume that the bag has a total of 18 apples: 8 red and 10 yellow. (1) What is the probability that the second apple you pick is red? (2) What is the probability that you pick at least one red apple?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Pulsified333
  • Pulsified333
@dan815
marco26
  • marco26
Draw a probability tree first.
Pulsified333
  • Pulsified333
|dw:1443696900943:dw|

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Pulsified333
  • Pulsified333
I don't know if that is right though
Jadedry
  • Jadedry
a) The probability that the first apple you pick is red = 8/18 The probability that the second apple you pick is also red = 7/17 Tot Probability= 56/306 --- The probability that the first apple you pick is yellow = 10/18 The probability that the second apple you pick is red = 8/17 Tot Probability = 80/306 --- Added together = 136/306 = 4/9 --- b) calculate the probability that you don't pick any red apples. = 10/18 * 9/17 = 90/306 = 5/17 1- 5/17 =12/17
Pulsified333
  • Pulsified333
oh my why didn't I think about that?
Pulsified333
  • Pulsified333
let me see if that works
Pulsified333
  • Pulsified333
thanks @Jadedry
marco26
  • marco26
Jadedry answers are right. |dw:1443697090611:dw| . Alternatively, you can use probability tree to solve the problem.
Jadedry
  • Jadedry
@Pulsified333 No problem, happy to help! Remember that if events are dependent on each other, you have to multiply. If they are not, you can add them up.

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