Question

A bag contains 6 red tiles, 8 blue tiles, and 6 green tiles. A tile is drawn, the color recorded, and then the tile placed back in the bag before a tile is drawn again. If this procedure is done 30 times, how many red tiles would you expect to draw?

Answer 1

Answer:

9 red tiles

Step-by-step explanation:

Total number of tiles: $6+8+6=20$

Total number of red tiles: $6$

Probability of getting red in one draw:  $\frac{6}{20}=0.3$

This means that you would expect to get red $0.3$  or 30% of the times.

Hence, when you draw tiles 30 times from the bag, you would expect red to be picked 30% of 30 times. This is:

$0.3*30=9$

So, you would expect to draw a red tile from the bag 9 times.