The graph shown here models the path of a diver as they run and jump from atop of a 400 ft cliff. The diver hits the water after 5 seconds. Which of the following is the realistic domain for this function that represent the time the diver was in the air?
1. (0, 400)
2. (5,400)
3. (0, -00)
4. [0,5]

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean