Question

5.         Ben, a graduate student, wants to write his thesis on the impact of hours of study on    exam performance. His goal is to demonstrate scientifically that when he scored very          high on a recent exam it was not just the result of luck, but rather it was due to the many             hours of study he put in. He conjectured that as he studied more, he was able to do more             practice problems, and completing more practice problems helped him to score higher on the exam. He acknowledged however that his IQ may have had an effect on the relationship between the number of hours of study and his score on the exam. He thinks a           student with a very high IQ may not have to put in many hours to get a higher score on an     exam.

            a. What is the problem statement

            b. Identify and label all the variables. Then draw a theoretical (or conceptual) framework                     for the problem.

            c. From the theoretical framework, identify three research hypotheses and formulate a                 null hypothesis (H_o) and an alternative hypothesis (H_A) for each one.

Answer 1

Answer 5. Ben, a graduate student, wants to write his thesis on the impact of hours of study on exam performance.

Solution:

a) the problem statement:

The impact of hours of study on exam performance. It means if he committed to do more studies then the scoring rate is better.

b) Identify and label all the variables:

i) Hours spending on studies vs scoring rate in exam.

ii) IQ of the person vs hours spending on studies.

iii) IQ of the person vs scoring rate in exam.

c) Identify three research hypotheses and formulate a null hypothesis (Ho) and an alternative hypothesis (Ha) for each one:

i) Null hypothesis: Ho: There is no relationship between hours spending on studies and scoring rate in exam.

Alternative hypothesis: Ha: There is relationship between hours spending on studies and scoring rate in exam.

ii) Null hypothesis: Ho: There is no relationship between IQ of the person and hours spending on studies.

Alternative hypothesis: Ha: There is relationship between IQ of the person and hours spending on studies.

iii) Null hypothesis: Ho: There is no relationship between IQ of the person and scoring rate in exam.

Alternative hypothesis: Ha: There is relationship between IQ of the person and scoring rate in exam.