3. A number cube is rolled 160 times. The number 2 comes up 39 times. What is the experimental probability of rolling a 2? What is the theoretical probability of rolling a 2?

A. 39/160; 1/80
B. 1/6; 39/160
C. 39/160; 1/6
D. 121/160; 1/6

Question

3. A number cube is rolled 160 times. The number 2 comes up 39 times. What is the experimental probability of rolling a 2? What is the theoretical probability of rolling a 2?

A. 39/160; 1/80
B. 1/6; 39/160
C. 39/160; 1/6
D. 121/160; 1/6

whpalmer4 · Answer

experimental probability is just the number of times it came up 2 divided by the number of times the cube was rolled.

The theoretical probability is the number of different possible outcomes where the cube shows a 2 divided by the number of possible outcomes.  Assuming the number cube has each number on only 1 face, this should be 1/6.

anonymous · Answer

Wait, which letter? o:

whpalmer4 · Answer

I've just about given you the answer.  If you can't figure out which letter corresponds to that, well...

anonymous · Answer

It's C.