Check Yo Pockets

1
Check Yo Pockets

• Qituwrah King
• Kourtney Howard

2
Question

• Does the weight of a coin affect the amount of
  times it will land on heads if it is flipped off
  of the thumb and the index finger?
• Using United States coins.

3
Claims

• Ho The prop. of heads is the same for Dimes,
  Nickels, Pennies, Quarters.
• PpPdPnPq.50
• Ha The prop. Of heads is not the same for
  Dimes, Nickels, Pennies, Quarters.
• Pp?Pd?Pn?Pq.50

4
Procedure

• Obtain a sample of each type of US coin (
  Quarter, Dime, Nickel, Penny.
• Flip each coin 25 times and record the outcome
  either heads or tails
• Use data to complete a X² GOF test use answers
  to write conclusion and make inferences.

5
Data
Heads Tails
Quarter
Dimes
Nickels
Pennys
6
Weights
Quarter 5.7 grams
Dime 2.3 grams
Nickel 5 grams
Penny 2.5 grams
7
Penny
8
Quarter
9
Dimes
10
Nickel
11
Equation

• We use the X² GOF test in the TI 84 calculator
• P .0635
• X² 7.28

12
Comments/ Concerns

• Strengths All coins were U.S coins and weights
  given were based on government estimates of each
  coins.
• Weaknesses Each persons finger strength is
  different causing amounts of flips in the air to
  be different.

13
Conclusion

• At the .05 level with a p-value of .0653 we fail
  to reject our claim that the number of heads
  received when flipping each coin (quarter, dime,
  nickel, penny) will be the same. This means that
  the weight or size of each coin does not effect
  the outcome of the flip.