Question

Check my ALG2 question PLEASE!

Answer 1

Barbara claims that her horse can do simple addition problems. She showed her horse eight 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 eight 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 eight coins to see how many would land tails up. He did this 53 times and the results are shown in the dot plot below

Answer 2

Let me post the rest of the problem, hold on

Answer 3

1: 3 dots
2: 6 dots
3: 9 dots
4: 12 dots
5: 9 dots
6: 8 dots
7: 5 dots
8: 1 dot

Answer 4

Choices:
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.

Answer 5

I said the answer is B, help>

Answer 6

@zepdrix @tejasvir

Answer 7

So based on the data, the odds of guessing all 8 right are somewhere around 1 in 53 or 1.9%. Yah I think you've got the correct option with B. It seems very very unlikely that the horse was guessing.

Answer 8

Oh wait wait they're not lettered, so I think I misread which one you were choosing >.< haha sorry

Answer 9

Hmm personally, I think it's option A
:o

Answer 10

Option A?? Sorry, but how does that really make sense? @zepdrix

Answer 11

Option B doesn't make sense.
`No`, `odds of guessing are very low`.
These two statements contradict one another^

If the odds are low, it implies the horse was able to do the math correctly. Unless some other sorcery was involved.

Unless you're saying that it doesn't make sense that a horse should be able to add, in which case why wouldn't you just pick the last option?

Answer 12

I'm so confused. If you're confident in A, i'd trust you rather than I trust my own abilities to decipher this junk haha @zepdrix

Answer 13

I'm very confident that it's not B.
That's the only option that doesn't make any sense.

I'm thinking that if the odds of guessing are really low,
then the odds that the horse can add are very high.

If that implication isn't true, they probably would have thrown some other information into the mix.

Bahh I dunno, I hate probability stuff >.<
Yah I'd probably go with A :3

Answer 14

I think I'm gonna go with A, thanks @zepdrix but can you PLEASE help me with one more, this one should be a lot easier :)

Answer 15

A coach wants to know if football players who warm up before a game will score more points than those who don't warm up. He will break the team up into two groups and make sure each player gets equal time on the field. He will then count how many points each player makes during the game. What statistic should he study? (1 point)

The mean number of points earned by each player
The mean number of points earned by each group
The standard deviation of the number of points earned by each player
The standard deviation of the number of points earned by each group

Answer 16

I think the answer is either B or C?

Answer 17

@zepdrix