Computing a two-independent-sample t test is appropriate when
A. different participants are assigned to each of two groups.
B. the population variance is unknown.
C. participants are observed one time in a given group.
D. all of these.
Ans: D
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What will be an ideal response?
Behavioral skill instruction is used for teaching ____________________________________
a. class rules and routines b. discussion skills c. politeness skills d. all of the above
What is a distinguishing feature of instructional software?
A. It supports collaborative learning. B. It has pre-programmed curricular material. C. It helps teachers and students be productive. D. It enables global communication.
Taking care of your body does NOT mean
A. drinking a lot of caffeine. B. exercising regularly. C. getting enough sleep. D. eating more protein and whole grain carbohydrates.