1) (-1.64,19.28) 2) We only have the sample means, we need to know the population means in order to calculate a confidence interval. 3) (3.86,13.78) 4) (-0.9,1854) 5) (-100.23, 117.87) The owner of a local golf course wants to estimate the difference between the average ages of males and females that play on the golf course. He randomly samples 7 men and 12 women that play on his course. He finds the average age of the men to be 48.45 with a standard deviation of 9.925. The average age of the women was 39.63 with a standard deviation of 10.688. Construct a 95% confidence interval to estimate the difference of (average age of men - average age of women). Assume the population standard deviations are the same