If you toss a pair of dice 1,000 times, how many times would you expect to get a sum of 12 as the result?
Answer a. about 12 times
b. about 27 times
c. about 36 times
d. about 100 times

We perform the experiment "toss three coins." Then the events "no heads appear" and "exactly 1 head appears are equally likely.
Answer True
False

Question

If you toss a pair of dice 1,000 times, how many times would you expect to get a sum of 12 as the result?
Answer    a. about 12 times 
   b. about 27 times 
   c. about 36 times 
   d. about 100 times 


We perform the experiment "toss three coins." Then the events "no heads appear" and "exactly 1 head appears are equally likely.
Answer  True 
 False

anonymous · Answer

12 on a pair of dice can only happen one way: {6,6}. Therefore, it's a 1/36 chance, so we should expect it to happen about 1000/36 times (I leave the simplification to you). "no heads appear" can only happen {T,T,T}, while "exactly one head appears" can happen {T,T,H}, {T,H,T}, or {H,T,T}, which is not the same number of possible outcomes which satisfy the conditions.