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QUESTION
A researcher claims that there is no significant difference in the proportion of "late flights" for 2 airline companies. A random sample of 75...
A researcher claims that there is no significant difference in the proportion of "late flights" for 2 airline companies. A random sample of 75 flights for "X" showed that 17 arrived late. A random sample of 85 flights for "Y" showed that 30 arrived late. Test the researcher's claim at a 5% level of significance. What is your conclusion?
