Exercise 7.2 Prior to a heart health presentation, you administer a survey asking participants to indicate how many times they used the stairs (as opposed to the elevator) in the past week. A week after the lecture, you resurvey the attendees.

Data set: Ch 07 - Exercise 02A.sav Codebook Variable: ID Definition: Participant ID code Type: Alphanumeric Variable: pretest Definition: Number of times steps were used in the week before the seminar Type: Continuous Variable: posttest Definition: Number of times the steps were used in the week after the seminar Type: Continuous 1. Write the hypotheses.