State the null and alternate hypotheses (if applicable), indicate what would be the appropriate hypothesis test or analysis technique, and state why you selected that technique.
An efficiency expert claims that a new ergonomic desk chair makes typing at a computer terminal easier and faster. To test it, 30 volunteers are selected. Half of the volunteers will use the new chair and half will use their old chairs. Each volunteer types a randomly selected passage for 2 minutes and the number of correct words typed is recorded