Generic VS VS Name brand Team members: Ashley Flores Chris Lopez
Stats Project (9) Donuts
Jun 26, 2015
A well-designed and well-executed project on tastes of donuts by Ashley and Chris. Though no significant results were found, the presentation was elegantly delivered.
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Generic VS VS Name brand
Team members:
Ashley Flores
Chris Lopez
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
? ? Can you taste the Can you taste the difference btwndifference btwn
? ? Hostess Donettes & Little DebbiesHostess Donettes & Little Debbies
? ? Powdered donuts?Powdered donuts?
??
??
??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Ho: No donuts Ho: No donuts preferred preferred
U = UU = U
Ha: Preference btwn Ha: Preference btwn donutsdonuts
U > UU > U
A BA B
A BA B
Matched/paired Matched/paired
One-sample One-sample t t Test Test
n= 30n= 30
Random
at least 30 teachers Normal
n > 30 Independent
Met 10% condition
Sampling procedure Sampling procedure (:(:
•Simple Simple randomrandom
•n=30n=30
•99thth- 12- 12thth grade grade teachersteachers
Sample Sample A-BA-B Freq.Freq.
-3-3
-2-2
-1-1
00
11
22
33
44
44
44
66
33
11
77
22
33
0
x
xt
s
n
t=0.559t=0.559
p= .29p= .29
=0.05=0.05
Test Statistics Test Statistics
Conclusion
Since p > .05 we fail to reject Null hypothesis .
D’OH!
• Teachers were in a rush!
• Dieting
• No difference
• Provide water for each taste
• When they have more time
• Give “b” first rather than “a”
• Where do they shop
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