Answer: For estimation concerning one proportion, use only

Chapter 1, Problem 9.69

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For estimation concerning one proportion, use only method 1 to obtain the condence intervals, unless instructed otherwise.A survey of 1000 students found that 274 chose professional baseball team A as their favorite team. In a similar survey involving 760 students, 240 of them chose team A as their favorite. Compute a 95% condence interval for the dierence between the proportions of students favoring team A in the two surveys. Is there a signicant dierence?

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