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A bag contains:
β€’ 2 white marbles
3 brown marbles
4 purple marbles
β€’ 6 orange marbles
A marble will be drawn from the bag and replaced 75 times. What is a reasonable prediction for the number of times a brown or purple marble
will be drawn?
50
45
35
30
th

Respuesta :

Answer:

45

Step-by-step explanation:

There are 45 total marbles. The probability of drawing a yellow marble on the first draw is 3/4. Given replacement, the probability on the second draw is the same as on the first draw, so the probability of black marble on the second draw is 6/14. The probability of drawing first a yellow marble then a black marble is 3/14 * 6/14 = 18/196.

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