BIO 106 EXAM 1 QUESTIONS &
ANSWERS PASSED RATED 100%
COMPLETE
when scientists carry out experiments, they are testing out... - Correct Answer ✔✔
hypothesis
what is the earliest step in the scientific process? - Correct Answer ✔✔ asking a
question about an observation
in a controlled experiment, which group receives the placebo? - Correct Answer ✔✔ the
control group
In Studies of Coffee and memory discussed, the independent variable is
_____________and the dependent varibale is________ - Correct Answer ✔✔ Caffeine,
memory
Can an epidemiologist who finds a correlation between the use of tannning beds and
melanoma (an aggressive form of skin cancer) in college-age women conclude that
tanning beds cause skin cancer? - Correct Answer ✔✔ no; correlation in not proof of
causation
You carry out a clinical trial to test whether a new drug relieves the symtoms of arthritis
better than a placebo. You have four groups of participants, all of whom have mildly
painful arthritis (rated 7 on a scale of 1 to 10). Each group received a daily pill as
follows: control (group 1): placebo; group 2: 2-15 mg; group 3: 25 mg; group 4: 50 mg.
At the end of two weeks, participants in each group are asked to rate their pain on a
scale of 1 to 10. What is the independent variable in the experiment? - Correct Answer
✔✔ the drug
In which of the following would you have the most confidence? - Correct Answer ✔✔ a
randomized clinical trial with 15,000 subjects
What is the importance of statistical analyses? - Correct Answer ✔✔ they can be used
to support or reject the hypothesis
they can be used to determine whether any observed differences between the two
groups are real or a result of chance
Options B and C
, You hear a news report about a new asthma treatment. What would you want to know
before you asked your doctor if the treatment was right for you? - Correct Answer ✔✔
was the drug tested in a randomized clinical trial?
how many participants were in teh trial?
was there a significant difference between the effect of the new drug and the treatment
used in the control group?
did any of the researchers have financial ties to the manufacturer of the new asthma
drug?
all of the above
You are listening to a news report that claims a new study has found convincing
evidence that a particular weight-loss product is much more effective than diet and
exercise. What can you infer about "convincing" evidence in this case? - Correct
Answer ✔✔ that statistical tests showed significantly more weight loss in the
participants who used the weight-loss product than those who relied on diet and
exercise
How can two different studies investigating the same thing (e.g., the relationship, if any,
between caffeinated coffee and memory) come to different conclusions - Correct
Answer ✔✔ they may have used different types of participants (e.g., participants of
different ages or professions)
they may have evaluated memory differently (e.g., long-term vs. short-term memory)
they may have had different sample sizes
they may have used different amounts of caffeine
All of the above
Richard Thaler recently won a Nobel Prize for demonstrating important ways that
human decision making is systematically ________ - Correct Answer ✔✔ irrational
You have collected evidence to argue an improtant case. What is the relevance of
Thaler's thesis to your effort to win this argument? - Correct Answer ✔✔ People want to
hear other people approve of their opinions. They only want to hear what is rational and
people will identify and go after the people who disagree. The article mentions that
evidence is taken seriously and that communicating evidence is important. Debating is
about communicating to learn as a way of competition. The article also mentions that if
you want to get people to agree with you, you will have to create a community of like-
minded people.
how to comunicate the truth?
ANSWERS PASSED RATED 100%
COMPLETE
when scientists carry out experiments, they are testing out... - Correct Answer ✔✔
hypothesis
what is the earliest step in the scientific process? - Correct Answer ✔✔ asking a
question about an observation
in a controlled experiment, which group receives the placebo? - Correct Answer ✔✔ the
control group
In Studies of Coffee and memory discussed, the independent variable is
_____________and the dependent varibale is________ - Correct Answer ✔✔ Caffeine,
memory
Can an epidemiologist who finds a correlation between the use of tannning beds and
melanoma (an aggressive form of skin cancer) in college-age women conclude that
tanning beds cause skin cancer? - Correct Answer ✔✔ no; correlation in not proof of
causation
You carry out a clinical trial to test whether a new drug relieves the symtoms of arthritis
better than a placebo. You have four groups of participants, all of whom have mildly
painful arthritis (rated 7 on a scale of 1 to 10). Each group received a daily pill as
follows: control (group 1): placebo; group 2: 2-15 mg; group 3: 25 mg; group 4: 50 mg.
At the end of two weeks, participants in each group are asked to rate their pain on a
scale of 1 to 10. What is the independent variable in the experiment? - Correct Answer
✔✔ the drug
In which of the following would you have the most confidence? - Correct Answer ✔✔ a
randomized clinical trial with 15,000 subjects
What is the importance of statistical analyses? - Correct Answer ✔✔ they can be used
to support or reject the hypothesis
they can be used to determine whether any observed differences between the two
groups are real or a result of chance
Options B and C
, You hear a news report about a new asthma treatment. What would you want to know
before you asked your doctor if the treatment was right for you? - Correct Answer ✔✔
was the drug tested in a randomized clinical trial?
how many participants were in teh trial?
was there a significant difference between the effect of the new drug and the treatment
used in the control group?
did any of the researchers have financial ties to the manufacturer of the new asthma
drug?
all of the above
You are listening to a news report that claims a new study has found convincing
evidence that a particular weight-loss product is much more effective than diet and
exercise. What can you infer about "convincing" evidence in this case? - Correct
Answer ✔✔ that statistical tests showed significantly more weight loss in the
participants who used the weight-loss product than those who relied on diet and
exercise
How can two different studies investigating the same thing (e.g., the relationship, if any,
between caffeinated coffee and memory) come to different conclusions - Correct
Answer ✔✔ they may have used different types of participants (e.g., participants of
different ages or professions)
they may have evaluated memory differently (e.g., long-term vs. short-term memory)
they may have had different sample sizes
they may have used different amounts of caffeine
All of the above
Richard Thaler recently won a Nobel Prize for demonstrating important ways that
human decision making is systematically ________ - Correct Answer ✔✔ irrational
You have collected evidence to argue an improtant case. What is the relevance of
Thaler's thesis to your effort to win this argument? - Correct Answer ✔✔ People want to
hear other people approve of their opinions. They only want to hear what is rational and
people will identify and go after the people who disagree. The article mentions that
evidence is taken seriously and that communicating evidence is important. Debating is
about communicating to learn as a way of competition. The article also mentions that if
you want to get people to agree with you, you will have to create a community of like-
minded people.
how to comunicate the truth?
