NSG 300 EXAM 3: NURSING RESEARCH
AND EVIDENCE-BASED PRACTICE
QUESTIONS AND ANSWERS
1. A researcher is studying the effect of a new cooling blanket on the body temperature of
febrile patients. The researcher assigns patients to groups based on their room number (even
numbers get the blanket, odd numbers do not). What type of design is this?
A. Experimental design
B. Quasi-experimental design
C. Non-experimental descriptive design
D. Correlational design
Answer: B
Conceptual Explanation: Quasi-experimental designs involve an intervention but lack a
key component of experimental designs, such as random assignment. Using room numbers
for assignment is systematic, not truly random.
,2. Which principle of the Belmont Report is violated if a researcher excludes a specific ethnic
group from a study that could potentially benefit that population?
A. Beneficence
B. Respect for Persons
C. Justice
D. Non-maleficence
Answer: C
Conceptual Explanation: Justice refers to the fair distribution of the burdens and benefits
of research. Excluding a group that could benefit violates this principle.
3. In a study measuring the impact of a mindfulness intervention on nurse burnout, the ‘p-
value’ is calculated as 0.02. How should the researcher interpret this result if the alpha is set
at 0.05?
A. The results are clinically significant but not statistically significant.
B. The results are not statistically significant; fail to reject the null hypothesis.
C. The results are statistically significant; reject the null hypothesis.
D. There is a 2% chance that the intervention worked.
Answer: C
Conceptual Explanation: A p-value less than the alpha (0.05) indicates that the results are
statistically significant, meaning the null hypothesis should be rejected.
, 4. A researcher uses a Cronbach’s alpha to evaluate a new survey tool. The result is 0.85.
What does this indicate about the tool?
A. The tool lacks face validity.
B. The tool has high construct validity.
C. The tool is unstable over time.
D. The tool has high internal consistency reliability.
Answer: D
Conceptual Explanation: Cronbach’s alpha measures internal consistency. A value of 0.80
or higher is generally considered excellent for a new tool.
5. Which type of qualitative research focuses on the ‘lived experience’ of individuals
regarding a specific phenomenon?
A. Phenomenology
B. Ethnography
C. Grounded Theory
D. Case Study
Answer: A
Conceptual Explanation: Phenomenology is the study of the lived experience and how
individuals make sense of their world.
AND EVIDENCE-BASED PRACTICE
QUESTIONS AND ANSWERS
1. A researcher is studying the effect of a new cooling blanket on the body temperature of
febrile patients. The researcher assigns patients to groups based on their room number (even
numbers get the blanket, odd numbers do not). What type of design is this?
A. Experimental design
B. Quasi-experimental design
C. Non-experimental descriptive design
D. Correlational design
Answer: B
Conceptual Explanation: Quasi-experimental designs involve an intervention but lack a
key component of experimental designs, such as random assignment. Using room numbers
for assignment is systematic, not truly random.
,2. Which principle of the Belmont Report is violated if a researcher excludes a specific ethnic
group from a study that could potentially benefit that population?
A. Beneficence
B. Respect for Persons
C. Justice
D. Non-maleficence
Answer: C
Conceptual Explanation: Justice refers to the fair distribution of the burdens and benefits
of research. Excluding a group that could benefit violates this principle.
3. In a study measuring the impact of a mindfulness intervention on nurse burnout, the ‘p-
value’ is calculated as 0.02. How should the researcher interpret this result if the alpha is set
at 0.05?
A. The results are clinically significant but not statistically significant.
B. The results are not statistically significant; fail to reject the null hypothesis.
C. The results are statistically significant; reject the null hypothesis.
D. There is a 2% chance that the intervention worked.
Answer: C
Conceptual Explanation: A p-value less than the alpha (0.05) indicates that the results are
statistically significant, meaning the null hypothesis should be rejected.
, 4. A researcher uses a Cronbach’s alpha to evaluate a new survey tool. The result is 0.85.
What does this indicate about the tool?
A. The tool lacks face validity.
B. The tool has high construct validity.
C. The tool is unstable over time.
D. The tool has high internal consistency reliability.
Answer: D
Conceptual Explanation: Cronbach’s alpha measures internal consistency. A value of 0.80
or higher is generally considered excellent for a new tool.
5. Which type of qualitative research focuses on the ‘lived experience’ of individuals
regarding a specific phenomenon?
A. Phenomenology
B. Ethnography
C. Grounded Theory
D. Case Study
Answer: A
Conceptual Explanation: Phenomenology is the study of the lived experience and how
individuals make sense of their world.
