A Survey of Randomly Selected University Students Found That 83

Multiple Choice

A survey of randomly selected university students found that 83 of the 110 first year students and 87 of the 120 second year students surveyed had purchased used textbooks in the past year.Construct a 98% confidence interval for the difference in the proportions of first and second year university students who purchased used textbooks.

A) (-0.084,0.868)
B) (-0.105,0.164)
C) (0.641,0.868)
D) (0.620,0.890)
E) (0.620,0.868)