According to USA Today (March 17. 1997), women made up 33.7% of the editorial staff at. Local TV stations in 1990 and 36.2% in 1994 assume 20 new employees were: hired as editorial staff.

(a) Estimate the number that would have been women in each year, respectively.

(b) Compute a 95% confidence interval to see if there is evidence that the proportion of women hired as editorial staff in 1994 was higher than the proportion hired in 1990.