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Question 15 (4 points) Lisa is a regional manager for a restaurant chain that has locations in the towns of Berwick, Milton, and Leesburg. She would like to investigate if a difference exists in the proportion of customers who rate their experience as satisfactory or better between the three locations. The following data represent the number of customers who indicated they were satisfied from random samples taken at each location. - Number Satisfied EE_ -_100 _ The chi-square critical value using or = 0.5 is O 1) 2.706 O 2) 3.841 O 3) 5.991 O 4) 7.815