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Wednesday 21 May 2014

Homework Week 2

 Game A

Throw two dice and add the top two numbers together
  • Player 1 wins when the result is an odd number 
  • Player 2 wins when the result is an even number 


Results showing game A.



Player A
7
Player B
10

Who is more likely to win:

A) Player 1       B) Player 2       C) Both players are equally likely

Explain your answer.
C

I think C because There is a 50/50 chance of winning so that is why I think C.



Game B

Throw two dice and multiply the top two numbers together


  • Player 1 wins when the result is an odd number 
  • Player 2 wins when the result is an even number 

Results showing game B. 



Player A
36
9
25
Player B
9
16
36


Who is more likely to win:

A) Player 1      B) Player 2      C) Both players are equally likely

Explain your answer.
B. 
Player 2 is my answer. I think this because the probability of player 1 and player 2 winning is actually different. I have set up and a times table sheet & highlighted the odd numbers in purple. As you can see below the odd numbers (Highlighted in purple) that are multiplied, there is a lot less then the even ones (in blue). I calculated that the  probability of player 1 winning is 9\39, The probability of Player 2 winning is 27\36, and that's my theory to my answer.



x
1
2
3
4
5
6
1
1
2
3
4
5
6
2
2
4
6
8
10
12
3
3
6
9
12
15
18
4
4
8
12
16
20
24
5
5
10
15
20
25
30
6
6
12
18
24
30
36
    














Play Game A 50 times and record your results

Player A wins: 30 times
Player A looses: 20 times

Player B wins: 28 times
Player B looses: 22 times

Do your results show that this game is fair?
 yes/no?

Explain your answer.

Yes.
I think this because, The results were really close between player 1 & player 2, I think this shows that it is fair because if the game wasn't fair the results would have a bigger range. 


Play game B 50 times and record your results

Player A wins: 12
Player A looses: 38

Player B wins: 38
Player B looses: 12

Do your results show that this game is fair?
yes\no?

Explain your answer.
No.

I think this because, as I said before the probability of getting an odd when rolling 2 dice and multiplying is 9\36 as for getting an even number is 27 \36. Therefore if Player A had to win by getting odd number first they would have a lot less chance of winning then player B who had to get an even number to win.




My Science Experiment 

1 comment:

  1. Super job on your probability dice exercise. You show an excellent understanding of how to work out the theoretical outcomes and then check them with experimenting. Loved your science experiment. Simple and effective. However, I would have liked more depth in your explanation of why what happens, happens. What is static? Does your finger have static too?

    ReplyDelete