2012 AP Stats Project (4)
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Transcript of 2012 AP Stats Project (4)
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FIGHT OF THE FRIES
Whose fries will meet their demise?
AVILA MENDIETA SANDOVAL
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•Originally called Insta-Burger
•Dubbed Burger King in 1955 by Dave Edgerton and James McLamore.
Nutritional FactsLarge Fries
Calories: 500Sodium: 820mgFat: 28g
Large Fries$2.49
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• Founded in 1948 by Dick and Mac McDonald.
• Franchised by Ray Kroc in 1954
Large Fries$2.19
Nutritional Facts
Large FriesCalories: 500Sodium: 350mgFat: 25g
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•Founded by Robert O. Peterson in 1951.
• Originally named Topsy’s Drive- In.
Nutritional Facts
Large FriesCalories: 580Sodium: 960mgFat: 28g
Large Fries$2.38
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Are Gender & French Fry Preference INDEPENDENT?
Ho: Gender and French fry preference are INDEPENDENT.
Ha: Gender and French fry preference are NOT INDEPENDENT.
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Testing
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Ho: Gender and fries preference are independent.
Ha: Gender and fries preference are not
independent.
Hypotheses
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We Will Run A…We Will Run A…
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Conditions Random
Independent
Normal
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McDonald’s Jack in the Box
Burger King Total
FemaleExpected
88(7.5)(7.5)
1616(15.5)(15.5)
11(2)(2)
25
MaleExpected
77(7.5)(7.5)
1515(15.5)(15.5)
33(2)(2)
25
Total 15 31 4 50
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CALCULATIONS2 1.1
- 0.58
2
p value
df
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Because our p-value was high….
We fail to reject the Ho,
we cannot conclude Ha.
Conclusion
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We Will Run A…We Will Run A…
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Ho: The 3 brands are equally preferred. (1/3)
Ha: Jack in the Box fries are more preferred. (>1/3)
Hypotheses
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McDonald’s Jack in the Box
Burger King Total
Observed 1515 3131 44 50
Expected (16.67)(16.67) (16.67)(16.67) (16.67)(16.67) 50
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CALCULATIONS2 22.12
- 0
2
p value
df
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Because our p-value was low….
We reject the Ho,
Jack in the Box fries are more preferred.
Conclusion
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Potential ERRORS•Fries got cold after awhile.
•Not very fresh.•Subjects tried to figure out what restaurant the fries came from and based their decision on their favorite restaurant.
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FIGHT OF THE FRIES
Whose fries will meet their demise?
AVILA MENDIETA SANDOVAL