Question

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

Answer 1

Answer:

We would approximately pick a red marble 214 times

Step-by-step explanation:

the probability of pulling a red marble out of a bag of colored marbles is 3:7

i.e. if x is the number of trials then we would pick a red marble approximately

$\dfrac{3}{7}x$ times

Here, we are given 500 trials

i.e. x=500

Then, number of times we would pick a red marble is:

$\dfrac{3}{7}\times 500$ times

≈ 214 times

Hence, we would approximately pick a red marble 214 times

Answer 2

Approximately you would select a marble 214 times.