Ten engineering schools in a country were surveyed. The sample contained 225 electrical engineers, 70 being women; 200 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? Click here to view page 1 of the standard normal distribution tab Click here to view page 2 of the standard normal distribution tab - Let p be the population proportion of electrical engineers that a schools that were surveyed. The 90% confidence interval is Ten engineering schools in a country were surveyed. The sample contained 225 electrical engineers, 70 being women; 200 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? Click here to view page 1 of the standard normal distribution tab Click here to view page 2 of the standard normal distribution tab Standard Normal Distribution Table (Page 2) - Let p be the population proportion of electrical engineers that a schools that were surveyed. The 90% confidence interval is