Theo, the head of the local drama camp, believes that attending his summer camp makes kids more interested in the dramatic arts. He would like to collect data, and thinks that if the data support his belief, he will be able to gain more attendance at his camp the following year. To test whether attending his camp makes kids more interested in the dramatic arts, Theo decides to run a study. In May, 60 middle school students sign up to attend his summer camp. As part of the registration process, Theo administers a questionnaire including questions about their interest in drama. The summer camp runs for a week in the middle of June. At the beginning of August, Theo sends another questionnaire to all the students to measure their interest in drama. Theo is thrilled to find that on average, the middle school students are now more interested in drama than they were before camp! Question at position 12 12 3 points Question at position 12 When looking carefully at his data, Theo finds that 60 campers completed his first questionnaire, but only 45 campers completed the second one. Theo should be cautious in interpreting his results, as they may be most likely affected by: When looking carefully at his data, Theo finds that 60 campers completed his first questionnaire, but only 45 campers completed the second one. Theo should be cautious in interpreting his results, as they may be most likely affected by: maturation effects mortality effects regression towards the mea