A simple random sample of 60 households in City 1 is taken. In the sample, there are 45 households that decorate their houses with lights for the holidays. A simple random sample of 50 households is also taken from the neighboring City 2. In the sample, there are 40 households that decorate their houses. We wish to estimate the difference in proportions of households that decorae their houses with lights for the holidays with a 95% confidence interval.
What is the sandard error of the difference in sample proportions?
A. 0.040
B. 0.0795
C. 0.0802
D. 0.1125