Chapter 26, Problem 6E

To determine

To explain why Chi-square goodness of fit test would not be appropriate.

Answer to Problem 6E

Because no count given.

Explanation of Solution

Given:

A salesman who is on the road visiting clients thinks that, on average, he drives the same distance each day of the week. He keeps track of his mileage for several weeks and discovers that he averages 122 miles on Mon-days, 203 miles on Tuesdays, 176 miles on Wednesdays, 181 miles on Thursdays, and 108 miles on Fridays. He wonders if this evidence contradicts his belief in a uniform distribution of miles across the days of the week.

There areaverages in mile given for each distance. The condition to use the Chi-square goodness of fit is that there should be count. So, this condition not satisfied. Hence, not appropriate to use Chi-square goodness of fit.