Robert claims that his dog can do single-digit multiplication......

Question

anonymous · Answer

Robert claims that his dog can do single-digit multiplication. He shows the dog 8 cards with simple multiplication problems that are either correct or incorrect. The dog correctly identifies the correctness of the card 5 times out of 8. If the dog were simply guessing, how many would the dog be expected to get correct? 

 5 

 8 

 13 

 4

anonymous · Answer

@amistre64 ?

amistre64 · Answer

the average of guessing between right and wrong is just 1 out of 2

amistre64 · Answer

so guessing is expected to get half right by chance alone

amistre64 · Answer

might be able to apply a binomial distribution if anything

anonymous · Answer

Oh so he would expect to get 4 right?

amistre64 · Answer

thats my assumption yes

anonymous · Answer

Ok, thanks!