Dr. Sullivan is conducting a clinical trial to determine if vitamin XX can improve test performance of students in an introductory college nutrition course. Dr
Sullivan puts all the students' names in a hat and draws names to determine if they will be placed in the control or the experimental group. The experimental group receives a capsule of vitamin XX and the control group a "sugar pill" that tastes and looks identical to the vitamin XX capsule. Neither Dr. Sullivan nor the participants know who is receiving which treatment. This experiment is BEST described as
A) single-blind, randomized. B) double-blind, randomized, placebo controlled.
C) double-blind, placebo controlled. D) single-blind, randomized, placebo controlled.
B
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a. True b. False Indicate whether the statement is true or false
A tracheostomy is a surgical opening made in the trachea to:
A. allow talking B. allow eating C. alleviate heartburn D. remove throat cancer E. assist breathing
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Answer the following statement true (T) or false (F)