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FIGHT OF THE FRIESAVILA   MENDIETA SANDOVAL  Whose fries will meet their demise?
•Originally called Insta-Burger•Dubbed Burger King in 1955by Dave Edgerton and James      McLamore.     Nutritional Facts ...
Large Fries                               $2.19                             Nutritional Facts• Founded in 1948 by Dick    ...
•Founded by Robert O.              Peterson in 1951.              • Originally named Topsy’s              Drive- In.      ...
Are Gender & French Fry Preference           INDEPENDENT?Ho: Gender and French fry preference are     INDEPENDENT.Ha: Gend...
Testing
HypothesesHo: Gender and fries preference      are independent.Ha: Gender and fries preference     are not independent.
We Will Run A…
ConditionsRandomIndependentNormal
McDonald’s   Jack in the   Burger King Total                        BoxFemale     8            16            1           2...
CALCULATIONSχ = 1.1 2p -value = 0.58df = 2
ConclusionBecause our p-value was high….   We fail to reject the Ho,   we cannot conclude Ha.
We Will Run A…
HypothesesHo: The 3 brands are equally     preferred. (1/3)Ha: Jack in the Box fries are  more preferred. (>1/3)
McDonald’s   Jack in the   Burger King Total                        BoxObserved   15           31            4           5...
CALCULATIONSχ = 22.12 2p -value ≈ 0df = 2
ConclusionBecause our p-value was low….      We reject the Ho,Jack in the Box fries are more          preferred.
Potential ERRORS•Fries got cold after awhile.•Not very fresh.•Subjects tried to figure out whatrestaurant the fries came f...
FIGHT OF THE FRIESAVILA   MENDIETA SANDOVAL  Whose fries will meet their demise?
2012 AP Stats Project (4)
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2012 AP Stats Project (4)

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Karen, Stephanie, and Aaron investigated the association between gender and fries preference. They also drew inference on which brand of fries is most preferable among the three choices.

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Transcript of "2012 AP Stats Project (4)"

  1. 1. FIGHT OF THE FRIESAVILA MENDIETA SANDOVAL Whose fries will meet their demise?
  2. 2. •Originally called Insta-Burger•Dubbed Burger King in 1955by Dave Edgerton and James McLamore. Nutritional Facts Large Fries Calories: 500 Sodium: 820mg Large Fries Fat: 28g $2.49
  3. 3. Large Fries $2.19 Nutritional Facts• Founded in 1948 by Dick Large Fries and Mac McDonald. Calories: 500 Sodium: 350mg• Franchised by Ray Kroc Fat: 25g in 1954
  4. 4. •Founded by Robert O. Peterson in 1951. • Originally named Topsy’s Drive- In. Nutritional Facts Large Fries Calories: 580Large Fries Sodium: 960mg $2.38 Fat: 28g
  5. 5. Are Gender & French Fry Preference INDEPENDENT?Ho: Gender and French fry preference are INDEPENDENT.Ha: Gender and French fry preference areNOT INDEPENDENT.
  6. 6. Testing
  7. 7. HypothesesHo: Gender and fries preference are independent.Ha: Gender and fries preference are not independent.
  8. 8. We Will Run A…
  9. 9. ConditionsRandomIndependentNormal
  10. 10. McDonald’s Jack in the Burger King Total BoxFemale 8 16 1 25Expected (7.5) (15.5) (2)Male 7 15 3 25Expected (7.5) (15.5) (2)Total 15 31 4 50
  11. 11. CALCULATIONSχ = 1.1 2p -value = 0.58df = 2
  12. 12. ConclusionBecause our p-value was high…. We fail to reject the Ho, we cannot conclude Ha.
  13. 13. We Will Run A…
  14. 14. HypothesesHo: The 3 brands are equally preferred. (1/3)Ha: Jack in the Box fries are more preferred. (>1/3)
  15. 15. McDonald’s Jack in the Burger King Total BoxObserved 15 31 4 50Expected (16.67) (16.67) (16.67) 50
  16. 16. CALCULATIONSχ = 22.12 2p -value ≈ 0df = 2
  17. 17. ConclusionBecause our p-value was low…. We reject the Ho,Jack in the Box fries are more preferred.
  18. 18. Potential ERRORS•Fries got cold after awhile.•Not very fresh.•Subjects tried to figure out whatrestaurant the fries came fromand based their decision on theirfavorite restaurant.
  19. 19. FIGHT OF THE FRIESAVILA MENDIETA SANDOVAL Whose fries will meet their demise?
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