The Internal Revenue Service wishes to study the time required to process tax returns in three regional centers. A random sample of three tax returns is chosen from each of three centers. The time (in days) required to process each return is recorded as shown below. They want to test whether the mean processing time varies from region to region.

East

49 39 45

West

47 52 51

Midwest

54 59 56

What is the p-value of the appropriate test? Report your answer in the proportion format, round to 4 decimals