Ten engineering schools in the United States were
Chapter , Problem 5.50(choose chapter or problem)
Ten engineering schools in the United States were surveyed. The sample contained 250 electrical engineers, 80 being women, and 175 chemical engineers, 40 being women. Compute a 90% confidence interval for the difference between the proportions of women in these two fields of engineering. Is there a significant difference between the two proportions?
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