A jar contains coins that are all mixed up. You pick out 20 coins. From this selection, 15 turn out to be gold, 3 are silver, and the remaining coins are bronze. If the jar contains 20 gold coins, 30 silver coins, and 50 bronze coins, what is the experimental probability of picking a bronze coin?

A. 50%
B. 10%
C. 4%
D. 2%

I'm thinking it's d.

Question

A jar contains coins that are all mixed up. You pick out 20 coins. From this selection, 15 turn out to be gold, 3 are silver, and the remaining coins are bronze. If the jar contains 20 gold coins, 30 silver coins, and 50 bronze coins, what is the experimental probability of picking a bronze coin?

A. 50% 
B. 10% 
C. 4%
D. 2%

I'm thinking it's d.

mertsj · Answer

If there are 100 coins in the jar, and 50 of them are bronze, the probability of bronze is 50%.

welshfella · Answer

isn't that the theoretical probability though?

perl · Answer

yes that is the theoretical probability

welshfella · Answer

so I guess the experimental probability is 2/20 ?

perl · Answer

experimental meaning doing an experiment (or sampling)

perl · Answer

yes :P

welshfella · Answer

ty

perl · Answer

the theoretical probability is the probability even before you do an experiment or sample

perl · Answer

what you should get in theory (under ideal conditions)

welshfella · Answer

well 50 %
so if you pick out 20 you should get 10 bronze