THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An airline is considering changing the color scheme of its planes' interiors.A focus group of 220 people was asked which color scheme they preferred.Of those who expressed a preference,87 preferred the new color scheme,while 121 preferred the old.
-The introduction of the new blue M&M has been received very well.In fact,the brand manager for M&M wants to add a color and is trying to decide which color to add.The manager asks a group of 12 life-long consumers of M&Ms to rank these colors on a scale of 1 to 10.The data is presented below:
Consumers of M&Ms

Using the Wilcoxon signed rank test,is there evidence that consumers' rankings were higher for one color or the other? State any assumptions needed to answer this question.

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An airline is considering changing the color scheme of its planes' interiors.A focus group of 220 people was asked which color scheme they preferred.Of those who expressed a preference,87 preferred the new color scheme,while 121 preferred the old.
-The introduction of the new blue M&M has been received very well.In fact,the brand manager for M&M wants to add a color and is trying to decide which color to add.The manager asks a group of 12 life-long consumers of M&Ms to rank these colors on a scale of 1 to 10.The data is presented below:
Consumers of M&Ms
  
Using the Wilcoxon signed rank test,is there evidence that consumers' rankings were higher for one color or the other? State any assumptions needed to answer this question.

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An airline is considering changing the color scheme of its planes' interiors.A focus group of 220 people was asked which color scheme they preferred.Of those who expressed a preference,87 preferred the new color scheme,while 121 preferred the old.
-The introduction of the new blue M&M has been received very well.In fact,the brand manager for M&M wants to add a color and is trying to decide which color to add.The manager asks a group of 12 life-long consumers of M&Ms to rank these colors on a scale of 1 to 10.The data is presented below:
Consumers of M&Ms
  
Using the Wilcoxon signed rank test,is there evidence that consumers' rankings were higher for one color or the other? State any assumptions needed to answer this question.