Which of the following statements is true?
A) Randomization allows for classification of participants according to their choice.
B) The subjects in the treatment group and the control group of an experiment are treated identically, except along a single dimension.
C) Randomization is not used in medical experiments.
D) The subjects in the treatment group and the control group of an experiment are identical in all respects and they are treated identically.
B
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With a surplus in our balance of payments, there is an excess __________ dollars in the foreign exchange market, causing the dollar to __________
A) demand for; appreciate B) demand for; depreciate C) supply of; appreciate D) supply of; depreciate
In the case of the production of electronic calculators, introduced in the United States in the 1960s,
a. a technological breakthrough reduced the input quantities needed to produce them. b. quantity demanded increased significantly as prices fell. c. production costs fell with advances in technology. d. All of the above are correct.