8.9 A travel agency wanted to compare the noncorporate prices charged by two major motel chains for a standard-quality single room at major airport locations around the country. A random sample of five Best Eastern motels and an independent sample of six Travelers’ Inn motels, all located at major airports, gave the approximate current total costs of a standard single room as shown below. Find a 95% confidence interval estimate of the difference between median costs at Best Eastern and Travelers’ Inn motels.

Best Eastern: $68, 75, 92, 79, 95 Travelers’ Inn: $69, 76, 81, 72, 75, 80