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!! HELP ASAP!! A bag has 5 yellow marbles, 3 red marbles, and 2 blue marbles. Quinn randomly picks a marble from the bag and returns it before another is
picked.
How many times would Quinn expect to pick a blue marble if he picks a marble 200 times?

Respuesta :

wegnerkolmp2741o

Answer:

40 blue marbles

Step-by-step explanation:

First find the probability of a blue marble

P (blue) = number of blue marbles / total marbles

             = 2 blue/ ( 5+3+2) total

              = 2/10

               =1/5

We can use this since we return the marble to the bag each time

We multiply this by 200 for the number of times it is picked

200 * 1/5 = 40

We should expect to pick 40 blue marbles

             

fichoh

The expected number of blue marbles Quinn will make from 200 picks is 40

Recall :

Probability = required outcome / Total possible outcomes

Total Number of marbles = (5 + 3 + 2) = 10

Number of Blue marbles = 2

Probability of randomly picking a blue marble :

  • P(blue) = 2 / 10 = 1 /5

Therefore, the expected number of blue marbles from 200 picks :

  • 200 × (1/5) = 40

Learn more : https://brainly.com/question/18153040

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