The probability of pulling a red marble out of bag of colored marble is 3:7 if you were to pull colored marbles out of the bag (one at a time, and putting the marble back each time) for 500 times, approximately how many times would you select red?

Answer 1

To calculate the approximate number of times you would select a red marble out of 500 pulls, you can use the probability of selecting red marbles from the bag.

The probability of selecting a red marble is 3/10 (since the ratio 3:7 can be simplified to 3/10).

So, for 500 pulls:
Number of times you would select red = 3/10 * 500 = 150

Therefore, you would approximately select a red marble around 150 times out of 500 pulls.