A traveler wanted to know if the prices of hotels are different in the ten cities that he visits the most often. The list of the cities with the corresponding hotel prices for his two favorite hotel chains is in Table 10.23. Test at the 1% level of significance.

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Cities Hyatt Regency prices in dollars Hilton prices in dollars Atlanta 107 169 Boston 358 289 Chicago 209 299 Dallas 209 198 Denver 167 169 Indianapolis 179 214 Los Angeles 179 169 New York City 625 459 Philadelphia 179 159 Washington, DC 245 Table 10.23 239