Aprofessor wishes to examine the benefits of an online homework session that meets once per week. he decides to analyze student understanding by administering an exam to 15 of his students, seated in the front row. how could this study be improved? select all that apply. a. use students in the top 10% of the class. b. select a random sample of his students. c. use a larger sample size. d. administer the same exam to a group that does not participate in an online homework session.

A professor wishes to examine the benefits of an online homework session that meets once per week

A.Use students in the top 10% of the class => 10% of students is not enough to analyze the understanding.

B.Select a random sample of his students => Random sample of students does not help in analyzing the student understanding.

C.Use a larger sample size. =>yes this helps in analyzing the student.

D.Administer the same exam to a group that does not participate in an online homework session=>yes this helps in analyzing the student.

y= 2x+7

changed to y= 5x +7

as slope is increased from 2 to 5

therefore it would be less steeper

so, option d) is correct