BME 170 Final Exam Questions &
Answers (Grade A+)
Impedance -
correct answer ✅the acoustic resistance to sound traveling in a
medium
Put these cap cleaning steps the correct order:
a) add bleach to about 5 mm above the label (about half of the
label's height). This should amount to 9:1 water to bleach ratio. You
should notice a small change in color in the water when there is
enough bleach.
b) Rinse thoroughly to remove the bleach from the EEG cap.
c) Submerge EEG cap in bucket of water. Use syringe to blast the gel
out from the following five electrodes and their vicinity
d)Find the rectangular plastic container with a label that says "Fill to
Here". Fill it with water up to the label
e) Change the bucket of water, since it is now filled with gel. Add a
small amount of Ivory soap. Wash the EEG cap like a piece of
delicate fabric.
f) Hang the EEG cap on the drying rack.
g) Fully submerge the EEG cap (use chopsticks to help submerge)
for 10 minutes. Do not throw away the chopstick. After 10 minutes,
transfer the EEG cap to the previous bucket. -
correct answer ✅cedagbf
,BME 170 Final Exam Questions &
Answers (Grade A+)
What amplifier settings were required and why? -
correct answer ✅The recommended gain is 20,000 and the mode
of operation should be set to normal. The low-pass filter should be
"on" (cut-off frequency 35 Hz), and the high-pass roll-off frequency
should be 1 Hz or 0.5 Hz, depending on the station.
Why did we provide sound and reacquire it with the EEG? -
correct answer ✅To synchronize our data and be able to extract
eyes open and eyes closed periods
What are common characteristics of EEG? -
How does a differential amplifier used in EEG work? -
correct answer ✅A differential amplifier is a type of electronic
amplifier that amplifies the difference between two input voltages
but suppresses any voltage common to the two inputs.
Given samples and experimental setup, which is the appropriate
statistical test to use (paired, unpaired, t-test, sign test)? -
, BME 170 Final Exam Questions &
Answers (Grade A+)
t test -
correct answer ✅a statistical test used to evaluate the size and
significance of the difference between two means
sign test -
correct answer ✅tests the hypothesis that data in x has a
continuous distribution with zero median against the alternative
that the distribution does not have zero median at the 5%
significance level.
What does a p-value mean and what does it tell you about a
statistical test? -
If you use a Google cloud service, you are connecting to a Google
computer located in:
a) Google's headquarters in Mountain View, California
b) It could be in any of dozens of data centers -
correct answer ✅b
In cloud computing, a bucket refers to:
a) a group of accounts working on one project
Answers (Grade A+)
Impedance -
correct answer ✅the acoustic resistance to sound traveling in a
medium
Put these cap cleaning steps the correct order:
a) add bleach to about 5 mm above the label (about half of the
label's height). This should amount to 9:1 water to bleach ratio. You
should notice a small change in color in the water when there is
enough bleach.
b) Rinse thoroughly to remove the bleach from the EEG cap.
c) Submerge EEG cap in bucket of water. Use syringe to blast the gel
out from the following five electrodes and their vicinity
d)Find the rectangular plastic container with a label that says "Fill to
Here". Fill it with water up to the label
e) Change the bucket of water, since it is now filled with gel. Add a
small amount of Ivory soap. Wash the EEG cap like a piece of
delicate fabric.
f) Hang the EEG cap on the drying rack.
g) Fully submerge the EEG cap (use chopsticks to help submerge)
for 10 minutes. Do not throw away the chopstick. After 10 minutes,
transfer the EEG cap to the previous bucket. -
correct answer ✅cedagbf
,BME 170 Final Exam Questions &
Answers (Grade A+)
What amplifier settings were required and why? -
correct answer ✅The recommended gain is 20,000 and the mode
of operation should be set to normal. The low-pass filter should be
"on" (cut-off frequency 35 Hz), and the high-pass roll-off frequency
should be 1 Hz or 0.5 Hz, depending on the station.
Why did we provide sound and reacquire it with the EEG? -
correct answer ✅To synchronize our data and be able to extract
eyes open and eyes closed periods
What are common characteristics of EEG? -
How does a differential amplifier used in EEG work? -
correct answer ✅A differential amplifier is a type of electronic
amplifier that amplifies the difference between two input voltages
but suppresses any voltage common to the two inputs.
Given samples and experimental setup, which is the appropriate
statistical test to use (paired, unpaired, t-test, sign test)? -
, BME 170 Final Exam Questions &
Answers (Grade A+)
t test -
correct answer ✅a statistical test used to evaluate the size and
significance of the difference between two means
sign test -
correct answer ✅tests the hypothesis that data in x has a
continuous distribution with zero median against the alternative
that the distribution does not have zero median at the 5%
significance level.
What does a p-value mean and what does it tell you about a
statistical test? -
If you use a Google cloud service, you are connecting to a Google
computer located in:
a) Google's headquarters in Mountain View, California
b) It could be in any of dozens of data centers -
correct answer ✅b
In cloud computing, a bucket refers to:
a) a group of accounts working on one project
