1. The number of 911 calls per day in a small Midwestern town is noted for a sample of 60 days with X 223.4 and S 23.7. With what degree of confidence can we assert that the mean number of 911 calls per day in this town is between 22.4 and 24.4? (A) 48 percent (B) 90 percent (C) 95 percent (D) 96 percent (E) 99 percent