1. The mean amount of money spent on lunch per week for a sample of 36 high-school students is $44. If the margin of error for the population mean with a 99% confidence interval is 1.80, construct a 99% confidence inter for the mean amount of money spent on lunch per week for all high-school students. Round your answers to 1 decimal place. 99% Confidence Interval: [l] < < [u]) 2. A certain college athletic program wishes to estimate the average increase in weight that an athlete can lift in the bench press after 6 months in their strength and conditioning program. A sample of 25 randomly selected athletes yields a mean gain of 45 pounds with the standard deviation of the sample equal to 4.0. Construct a 90% confidence interval to represent the approximate gains in strength of all athlete in the program. = 45 _______. Round your answer to 2 decimal places. 3. The mean number of hours watching TV per week for a sample of 317 teenagers is 24. If the margin of error for the population mean with a 95% confidence interval is 1.5, construct a 95% confidence interval for the mean number of hours watching TV per week for all teenagers. Round your answers to 1 decimal place. 95% Confidence Interval: [l] < < [u]