Now solved: For estimation concerning one proportion, use only method 1 to obtain the
Chapter 1, Problem 9.66(choose chapter or problem)
For estimation concerning one proportion, use only method 1 to obtain the condence intervals, unless instructed otherwise.Ten engineering schools in the United States were surveyed. The sample contained 250 electrical engineers, 80 being women; 175 chemical engineers, 40 being women. Compute a 90% condence interval for the dierence between the proportions of women in these two elds of engineering. Is there a signicant dierence between the two proportions?
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