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8. 10. 11. According to Vernier,, does the device need to be calibrated?
If yes, how does Vernier advise to calibrate the device? If no, how can you suggest to calibrate
such a device? [6 pts] State the research question and statistical null/alternative hypotheses for the experiment [6 pts] What data sets do you expect to compare to each other? What do you expect to be able to
conclude from these comparisons? [6 pts] Describe the statistical assessment you will do by answering the questions below. For each
answer, JUST IFY your choice (for example, I choose to do regression because the data set is continuous). [3 pts]
a. Type of Test:
b. Tails: c. Paired or Unpaired:
d. Sample size in use: Part 2: Physiology Reading Assignment. Read:
I. “The Heart as a Pump: Electrical Signals Coordinate Contraction” from “Human
Physiology An Integrated Approach” {6* Edition: Chapter 14, pg. 483-500; 7*“ Edition pg. 454 -471} , and
II. Lab 3 Manual Introduction All the answers can be found in the lab manual introduction. 1. Electrical signals coordinate the heart contractions. Explain the path of an electrical signal,
beginning with the SA Node and ending with depolarization of the ventricles: [5 pts] 2. Why is it necessary for electrical signals to pass through the AV node? (Why not allow them
to spread downward from atria directly? In which direction do ventricles contract?) [4 pts] 3. Name three types of auto rhythmic cells that set the “pace" of the heart. [4 pts] 4. Sketch a normal ECG and indicate the normal amplitude (in mV) of the 5 different waves. [5

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