20. Suppose we want to estimate the average weight of an adult male in Dekalb County, Georgia. We draw a random sample of 1,000 men from the population of interest and weigh them. We find that the average man in our sample weighs 180 pounds, and the standard deviation of the sample is 30 pounds. What is the 95% confidence interval? A. 165.3 to 185.5 lbs B. 178.1 to 181.9 lbs C. 173.2 to 184.8 lbs D. 177.2 to 182.9 lbs