Dr. Garcia gives the same final exam in her psychology class every semester. The mean exam score for every student who has ever taken her exam is a 77.6, with a standard deviation of 7.2. Dr. Garcia selects a random sample of 36 students and has them take a study skills course (e. g. note-taking, reading strategies, exam preparation, test-taking, etc.) before taking her class. The mean final exam score for students who took the study skills course was a 79.5. Required:
Conduct a hypothesis test to determine if there is sufficient evidence at the 10% level of significance that students who took the study skills course had higher exam scores.

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)