Why do firms engage in price discrimination?
A) to decrease cost
B) to increase profits
C) to increase consumer surplus
D) to prohibit the resale of their products
B
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Why wasn't there a live low-train high group?
A study was done in 1998 by Dr. Benjamin Levine to explore the role of altitude training in athletic performance. First he trained athletes at low altitude, then measured their finish times in a 5 kilometer run. Then the athletes were placed into one of the following groups: I, living and training at high altitude; II, living at high altitude and training at low; or III, living and training at low altitude. The athletes were then retested in another low-altitude 5 K race. In this study, what are the control and experimental data? What are the dependent and independent variables? The results are expressed as average change in speed of each group. I: -3.4 sec., II: +13.4 sec., III: -26.7 sec. Graph and interpret the results. Did the results surprise you? Why or why not? Propose some explanations for the lower performance by the live high-train high group.
Lymph flows through lymphatic vessels due to
A) respiratory movements. B) both skeletal muscle contractions and respiratory movements. C) skeletal muscle contractions. D) strong vasoconstriction of vessel walls. E) None of the answers are correct.
A person who is standing facing forward with hands at the sides, palms facing forward, is in the:
A) frontal position. B) sagittal position. C) anatomical position. D) supine position.
Men have one rib fewer than women
Indicate whether the statement is true or false