Airline
Ten Business People Who Fly Frequently Were Asked to Rank

Airline
Ten business people who fly frequently were asked to rank four airlines in terms of the quality of service.The people assigned scores using a 5-point scale where: 1 = bad,2 = poor,3 = average,4 = good,and 5 = excellent.The results are shown below: $$\begin{array}{l}\text { Airline }\\\begin{array} { | c | c c c c | } \hline \text { Person } & \text { A } & \text { B } & \text { C } & \text { D } \\\hline 1 & 1 & 3 & 5 & 2 \\2 & 5 & 4 & 2 & 1 \\3 & 2 & 5 & 3 & 2 \\4 & 4 & 2 & 4 & 1 \\5 & 3 & 3 & 1 & 5 \\6 & 4 & 4 & 5 & 3 \\7 & 3 & 4 & 1 & 4 \\8 & 2 & 5 & 2 & 1 \\9 & 5 & 3 & 4 & 2 \\10 & 5 & 5 & 4 & 3 \\\hline\end{array}\end{array}$$
-Can we conclude at the 5% significance level that there are differences in service quality among the four airlines?
H₀: __________________________
H₁: __________________________
Test statistic = ____________________
Critical Value = ____________________
Conclusion: ________________________________
Interpretation: ________________________________________________________