Question

A bag contains 7 green marbles,2 white marble s, 5 orange marbles,9 blue marbles, and 7 red marbles. a marble will be drawn from the bag and replaced 180 times what is a reasonable prediction for the number of times a white or red marble will be drawn?

Answer 1

The reasonable probability that a white or red marble will be drawn all 180 times is; (3/10)¹⁸⁰.

Probability with replacement

Since the probability is with replacement;

• First, the total number of marbles in the bag is; 7+2+9+5+7 = 30.

Hence, the probability that a white or red ball is drawn each time is; 2+7 = 9 possible outcomes.

Hence, it follows that the probability for white or red each time is; 9/30 = 3/10

Hence, when drawn 180 times, the probability is;

• P = (3/10)¹⁸⁰.

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