need help in this probability and statistic question with steps, thank you so much

(b) A shipping company needs to choose among three different routes, Routes 1, 2, and 3, to go from point C to point D. Members of the analytics team randomly select 18 truck drivers and randomly assign 6 of them to each route. Then the hours from point C to point D are measured. The sample mean time for Routes 1, 2, 3, are 5.3650, 6.0361 5.6333, respectively; and the sample standard deviations are 0.2512, 0.4905, and 0.3565, respectively. Is there a difference in the mean trip time among the routes at 5% significance