In a double-blind experiment, ________
A) the participants are unaware of whether they are in the experimental or control groups because of the use of placebos
B) the researchers are unaware of which participants are in the experimental and control groups
C) participants are randomly assigned to a control or experimental group
D) All of the above are true.
Answer: D
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Answer the following statement true (T) or false (F)
A couple would like to know what the probability is that out of five children, three will be girls. This is solved using which of the following?
A. Sum rule B. Product rule C. Chi-square test D. Binomial expansion E. Random sampling error
The plant hormone that stimulates cell division in seeds and fruits is
A. auxin. B. jasmonic acid. C. abscisic acid. D. cytokinin. E. ethylene.
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Figure 34.4A
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Use the posterior pituitary function illustration above to answer the following question.
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Signals that stimulate the release of hormone molecules are carried along the component indicated by the letter ____.
A. A B. B C. C D. D E. E