This quiz has been regraded; your score was not affected.
LS7L Final Exam - Group Stage - S25
Due Jun 6 at 12pm
Points 20
Questions 18
Available Jun 3 at 9am - Jun 6 at 12pm
Time Limit None
Allowed Attempts Unlimited
Instructions
This is the group stage of the LS7L final exam. You will be presented with 20 multiple choice questions and
you are encouraged to collaborate with your lab group. Some question prompts will contain multiple sub-
questions (Ex: Question #1.1 and #1.2). Each sub-question is considered one of the 20 total questions and is
worth the same amount of points as a stand-alone question.
You can submit the group stage of the exam as many times as you need to until the deadline, only your final
submission will count.
The group stage is worth 20 points and is graded on accuracy.
After the deadline, you will be able to see your score and review your answers to see what questions you got
incorrect. You will not be able to see the correct answers to the questions you got wrong.
This quiz was locked Jun 6 at 12pm.
Attempt History
Attempt Time Score Regraded
LATEST Attempt 1 2,299 minutes 20 out of 20 20 out of 20
Correct answers are hidden.
Score for this attempt: 20 out of 20
Submitted Jun 6 at 11:52am
This attempt took 2,299 minutes.
Question 1
pts
In a recent study, scientists examined whether amount of sleep impacted response time on the MIT.
,583 people were split into two groups, 258 people who got 5 hours of sleep before taking the MIT and 325
people who got 8 hours of sleep before taking the MIT. An unpaired analysis using resampling was run
comparing the response time between the two groups.
Which of the following experimental hypotheses is best, based on the experiment description?
The hypothesis is that people who took the MIT twice, once after getting 5 hours of sleep and once after getting 8 hours of
sleep, will have different response times on the MIT.
The hypothesis is that people who get less sleep before taking the MIT will have a different response time than people who got
more sleep before taking the MIT.
The hypothesis is that people who got 5 hours of sleep will have a slower response time on the MIT than people who got 8
hours of sleep before taking the MIT.
The hypothesis is that people who got 5 hours of sleep before taking the MIT will have a different response time than people
who got 8 hours of sleep before taking the MIT.
Question 2
pts
You are testing the hypothesis that people who drink alcohol weekly will have a different accuracy on the MIT
than people who drink alcohol monthly. You get the following results:
p- p-
Mean SD Median MAD
value value
Weekly 77.2 6.58 Weekly 76 12
0.034 0.0082
Monthly 76.6 8.15 Monthly 73 14
, Based on what you learned in LS7L, what is the best summary statistic to analyze this dataset and what
conclusion can you make about the data?
Median; There is a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who drink
it monthly.
Median; There is not a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who
drink it monthly.
Mean; There is a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who drink it
monthly.
Mean; There is not a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who
drink it monthly.
Question 3
pts
Looking at the image of a volumeter window below, what volume is being pipetted?
LS7L Final Exam - Group Stage - S25
Due Jun 6 at 12pm
Points 20
Questions 18
Available Jun 3 at 9am - Jun 6 at 12pm
Time Limit None
Allowed Attempts Unlimited
Instructions
This is the group stage of the LS7L final exam. You will be presented with 20 multiple choice questions and
you are encouraged to collaborate with your lab group. Some question prompts will contain multiple sub-
questions (Ex: Question #1.1 and #1.2). Each sub-question is considered one of the 20 total questions and is
worth the same amount of points as a stand-alone question.
You can submit the group stage of the exam as many times as you need to until the deadline, only your final
submission will count.
The group stage is worth 20 points and is graded on accuracy.
After the deadline, you will be able to see your score and review your answers to see what questions you got
incorrect. You will not be able to see the correct answers to the questions you got wrong.
This quiz was locked Jun 6 at 12pm.
Attempt History
Attempt Time Score Regraded
LATEST Attempt 1 2,299 minutes 20 out of 20 20 out of 20
Correct answers are hidden.
Score for this attempt: 20 out of 20
Submitted Jun 6 at 11:52am
This attempt took 2,299 minutes.
Question 1
pts
In a recent study, scientists examined whether amount of sleep impacted response time on the MIT.
,583 people were split into two groups, 258 people who got 5 hours of sleep before taking the MIT and 325
people who got 8 hours of sleep before taking the MIT. An unpaired analysis using resampling was run
comparing the response time between the two groups.
Which of the following experimental hypotheses is best, based on the experiment description?
The hypothesis is that people who took the MIT twice, once after getting 5 hours of sleep and once after getting 8 hours of
sleep, will have different response times on the MIT.
The hypothesis is that people who get less sleep before taking the MIT will have a different response time than people who got
more sleep before taking the MIT.
The hypothesis is that people who got 5 hours of sleep will have a slower response time on the MIT than people who got 8
hours of sleep before taking the MIT.
The hypothesis is that people who got 5 hours of sleep before taking the MIT will have a different response time than people
who got 8 hours of sleep before taking the MIT.
Question 2
pts
You are testing the hypothesis that people who drink alcohol weekly will have a different accuracy on the MIT
than people who drink alcohol monthly. You get the following results:
p- p-
Mean SD Median MAD
value value
Weekly 77.2 6.58 Weekly 76 12
0.034 0.0082
Monthly 76.6 8.15 Monthly 73 14
, Based on what you learned in LS7L, what is the best summary statistic to analyze this dataset and what
conclusion can you make about the data?
Median; There is a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who drink
it monthly.
Median; There is not a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who
drink it monthly.
Mean; There is a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who drink it
monthly.
Mean; There is not a significant difference in accuracy on the MIT between people who drink alcohol weekly and those who
drink it monthly.
Question 3
pts
Looking at the image of a volumeter window below, what volume is being pipetted?
