# Probability

An urn contains 8 red chips, 10 green chips, and 2 white chips. A chip is drawn and replaced and then a second chip is drawn. What is the probability of?

a.) A white chip on the first draw

b.) A white chip on the first draw and a red on the second.

c.) Two green chips being drawn.

d.) A red chip on the second draw given a white chip was drawn on the first.

https://brainmass.com/statistics/probability/probability-4062

#### Solution Preview

a) The total number is N=8+10+2=20. since there are 2 white chips, the probability for a white chip to be drawn is 2 out of 20, i.e., P=2/20=0.1 or 10%

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<br>b) From (a), the probability for a white chip to be drawn is Pw= 0.1.

<br> In the same way, the probability for a red chip to be drawn is 8 out of ...

#### Solution Summary

The solution addresses the probability of an urn contains 8 red chips, 10 green chips, and 2 white chips. A chip is drawn and replaced and then a second chip is drawn. What is the probability of?

a.) A white chip on the first draw

b.) A white chip on the first draw and a red on the second.

c.) Two green chips being drawn.

d.) A red chip on the second draw given a white chip was drawn on the first.