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 following table provides the score on a performance evaluation of employees when first hired,and one year later.
Employee

Using the Wilcoxon signed rank test,is there evidence that the employees' evaluations improved over their first year?

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 following table provides the score on a performance evaluation of employees when first hired,and one year later.
Employee
  
Using the Wilcoxon signed rank test,is there evidence that the employees' evaluations improved over their first year?

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 following table provides the score on a performance evaluation of employees when first hired,and one year later.
Employee
  
Using the Wilcoxon signed rank test,is there evidence that the employees' evaluations improved over their first year?