Blood sugar levels rise and fall in response to various factors ...

[rachel9]

Blood sugar levels rise and fall in response to various factors including when one last ate. Dr. Jones wants to measure participants' glucose levels over the course of a two-week treatment protocol.
 
  She arranges for participants' blood to be drawn every morning, between 6:00 a.m. and 8:00 a.m., before the participants consume breakfast. She is exerting which type of control?
   a) Constanc
 b) Randomization
 c) Elimination
 d) Balancing

Question 2

To increase the probability of your research findings resulting from the independent variable and not from chance, the between-groups variability should ______ and the error variability should
 
  a) increase; decrease
 b) increase; increase.
 c) decrease; increase.
 d) decrease; decrease.

[nothere]

Answer to Question 1

A

Answer to Question 2

A