Question: A recent survey found that 83% of the men questioned preferred computer-assisted instruction to the lecture format. Of the women questioned, 75% preferred computer-assisted instruction to lecture.

One hundred individuals were surveyed in each sample group. Test the claim that there is no difference in the proportion of men and the proportion of women who favor computer-assisted instruction over lecture. Use an error rate of 0.05. Find the 95% confidence interval for the difference of the two proportions.