The mean gpr averages of a random sample of 36 college seniors is calculated to be 2.6. the population standard deviation is 0.3. a. find the 95% confidence interval for the mean of the entire senior class. b. find the 99% confidence interval for the mean of the entire senior class. c. which confidence interval is wider? why?

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes

Which is the focus of a parabola with equation y2=4x