Barbara claims that her horse can do simple addition problems. She showed her horse 8 different cards with simple addition problems, and the horse was able to tap his foot to indicate whether the answer was correct or incorrect. The horse correctly identified all 8 cards. Eric didn't believe Barbara's horse could do addition, so he set up a trial to test whether the horse was just guessing. He flipped 8 coins to see how many would land tails up. He did this 53 times and the results are shown in the dot plot below.

Question

sleepyjess · Answer

1: 3 dots
2: 6 dots
3: 9 dots
4: 12 dots
5: 9 dots
6: 8 dots
7: 5 dots
8: 1 dot

Based on these results, can Barbara's horse add?
Yes, the chances of getting 8 correct by guessing are very low.
No, the chances of getting 8 correct by guessing are very low.
Yes, it is likely to get them all correct.
No, horses can't add.

ankit042 · Answer

what do you feel will be the answer?

sleepyjess · Answer

I think B or D but I don't know what flipping a coin has to do with a horse adding

ankit042 · Answer

Flipping of a coin is a random event. what we are trying to show is probability of a random event now if horse performs better than a random flipping of coins then chances he can add are more

ankit042 · Answer

so can you find the probability of getting all 8 coins to land tails from the data?

sleepyjess · Answer

1/53?

ankit042 · Answer

Yes! so I think answer is option A
Horses can indeed add

sleepyjess · Answer

OH I get it now.

ankit042 · Answer

anyway I have leave now. message me if you have any doubts!

sleepyjess · Answer

Ok thank you for all your help!

anonymous · Answer

This was correct, thanks! (just took the segment practice test)