Norovirus on Cruise Ships, the queen Elizabeth II cruise ship and Royal Caribbean’s Freedom of the Seas cruise ship both experienced outbreaks of norovirus within two months of each other. Results are shown in the table below. Use a 0.05 significance level to test the claim that getting norovirus is independent of the ship. Based on these results, does it appear that an outbreak of norovirus has the same effect on different ships? Show your work. Norovirus No norovirus Queen Elizabeth II 276 1376 Freedom of the Seas 338 3485
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