Which is the better buy, 6 bagels for $3.29 or 8 bagels for $4.15?
2 answers:
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Answer:
The skitties are not evenly distributed by colour
Step-by-step explanation:
Given that Mr. T aylor's 4th grade class uses Skittles to learn about probability. They open several randomly selected bags of Skittles and sort and count the different colors and want to determine if Skittles are evenly distributed by color.
(Two tailed chi square test)
If all are equally distributed then expected values would be equal to 420/5 =104
Observed Red Orange Yellow Purple Green Total
107 101 87 115 10 420
Expected 104 104 104 104 104 420
Chi square 0.0865 0.0865 2.7788 1.16345 84.9615 89.0769
Chi square is calculated as (obs-exp)^2/exp
Total chi square = 89.0769
df = 4
p value = <0.00001
Reject null hypothesis
The skitties are not evenly distributed by colour