I need help with this. could you list steps as well.

A past survey of 1,068,000 students taking a standardized test revealed that 8.9% of the students were planning on studying engineering in college. In a recent survey of 1,476,000 students taking the SAT, 9.2% of the students were planning to study engineering. Construct a 90% confidence interval for the difference between proportions p, - p, by using the following inequality. Assume the samples are random and independent. AA The confidence interval is