A Suburban Realtor Is Studying Commuter Time in the Calgary $\alpha$

A suburban realtor is studying commuter time in the Calgary metropolitan area. She has been told the average weekday travel time from a southern suburb at 8:00 a.m. is 45 minutes. For five months she counts the number of days that it takes her more than 45 minutes to arrive in downtown when she leaves her house at 8:00 a.m. She expects the data are uniformly distributed across the five months. Her sample of observed data yields the following frequencies: 9 days, 15 days, 8 days, 11 days, 12 days. Using $\alpha$ =.01, the critical chi-square value is ___.

A) 13.277
B) 15.086
C) 7.779
D) 11.070
E) 2.727