Question

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

Answer 1

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

Answer 2

@amistre64 ?

Answer 3

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

Answer 4

so guessing is expected to get half right by chance alone

Answer 5

might be able to apply a binomial distribution if anything

Answer 6

Oh so he would expect to get 4 right?

Answer 7

thats my assumption yes

Answer 8

Ok, thanks!