- Question: A study is planned to research the effects of drinking coffee on hours of sleep. Would
an experimental or observational study design be more appropriate? - Question: A researcher is interested in the effects of watching videos just before bed on the
quality of sleep. Which of the following claims would be appropriate for this situation? Select only
one answer choice. - Question: In a psychological study aimed at testing a medicine for reducing stress levels, the
researcher grouped the participants into 2groups and gave the stress-reduction pill to one group
and a placebo pill to another group. In the description of the above situation, determine the
experimental group. - Question: In a survey conducted to find out the feedback of a sports program organized in a club,
the organizers asked the respondents to classify their feedback as good, fair, poor, and bad. Is the
study observational or experimental? If it is an experiment, what is the controlled factor? - Question: In a survey conducted to find out the feedback of a sports program organized in a club,
the organizers asked the respondents to classify their feedback as good, fair, poor, and bad. Is the
study observational or experimental? If it is an experiment, what is the controlled factor? - Question: A study was performed with a random sample of 513 bolts produced at one factory.
What population would be appropriate for generalizing conclusions from the study, assuming the
data collection methods used did not introduce biases? - Question: A researcher wants to find out the effect of the amount of protein eaten at breakfast on
the aerobic performance of runners. Would an experimental or observational study design be more - Question: In the description of the following experiment, determine the experimental factor. A
pharmaceutical company conducted an experiment to test a breakfast drink for school children.
The company enrolled students for the experiment in the age group of 6 to 10 and divided them
into two groups. One group received the new breakfast drink with their normal breakfast, and the
other group drank the same amount of a similar looking juice. Identify the experimental factor. - Question: A study was performed with a random sample of 200 people from one college. What
population would be appropriate for generalizing conclusions from the study, assuming the data
collection methods used did not introduce biases? - Question: A team of physicians is studying a weight-loss pill. They recruited volunteers for a
study. The volunteers were in the age group of 30 to 35 and were more than 40 pounds overweight.
The physicians gave the new weight-loss pill pack to one group. The other group received a pill
pack that resembled the new weight-loss pill pack but was a placebo. In the description of the
above situation, determine the experimental group. - Question: A study was conducted among school students on the relationship between getting up
late and getting to school late. Is this an example of an observational study or experimental
study? If it is an experiment, what is the controlled factor? - Question: A consumer research company is interested in determining if a certain company’s new
refrigerator model is more efficient than the older model. What should the researchers do first - Question: A research team is testing a product that will minimize wrinkles among women.
Volunteers in the age group of 40 to 45 are included in the research. The research team gives a
bottle of the solution to one group and a similar bottle of solution with no ingredients intended to
lessen wrinkles to the other group. In the description of the above situation, determine the control
group. - Question: Is a survey of the guests about their preference of food at a party an observational study
or experimental study? If it is an experiment, what is the controlled factor? - Question: A pharmaceutical company conducted an experiment to test a drug for controlling
diabetes. The company enrolled participants for the experiment and divided them into 2 groups.
One group received an inert drug, and the other group received the diabetes-control drug. In the
description of the above experiment, determine the control group. - Question: A consumer research company is interested in determining if a certain company’s new
refrigerator model is more efficient than the older model. Researchers decide to investigate the
claim that the new model uses 10% less electricity than the older model for the same cooling load.
Which data collection method is appropriate? Select only one answer choice - Question: In a study to identify the effectiveness of drugs in reducing smoking habits, the study
participants were grouped into 3categories. Each of the groups was assigned randomly to one type
of drug, either Drug A, Drug B, or Drug C. Results were observed for a 4 week period. Is the study
observational or experimental? If it is an experiment, what is the controlled factor?………. - ……
- ….
ANSWERS
……..please click the icon below to purchase all answers at $10