THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 157

Essay

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.
-Upon entering a business school,students are asked regarding their intended concentration.From past records the following proportions were determined,30% - management,15% - finance,20% - accounting,25% - marketing,and 10% - economics.For the newly admitted class of 350 students,the breakdown of preferences was as follows: 99 - management,66 - finance,59 - accounting,80 - marketing,and 46 - economics.Is there sufficient evidence that the newly admitted class is different from previous classes?