An instructor compared the average weekly minutes spent reading an online textbook for a group of students in her online class (Condition 1) to the recommended weekly minutes of reading (Condition 2). If the instructor wants to see if her online students are reading significantly less than the recommended times, then the appropriate one-tailed null hypothesis is: a. 1 2 b. 1 > 2 c. 1 2 d. 1 < 2 e. 1 2