Question 15 2 pts (CO 5) A researcher wants to determine if eating more vegetables helps high school juniors learn algebra. One junior class has extra vegetables and another junior class does not. After 2 weeks, the entire both classes take an algebra test and the results of the two groups are compared. To be a valid matched pair test, what should the researcher consider in creating the two groups? O That the group without extra vegetables receives different instruction O That each class has similar average IQs or abilities in mathematics O That each pair of students has similar IQs or abilities in mathematics That each class of students has similar ages at the time of the testing