In an Experiment on Parapsychology a Scientist Wants to Investigate

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In an experiment on parapsychology a scientist wants to investigate how well a subject can correctly guess what symbol the experimenter is thinking of. The experimenter chooses from 4 different possible symbols. To avoid bias the experimenter uses a random number table to select a symbol to concentrate on for each trial. Assuming the experiment is not biased what are the probabilities for the following outcomes if chance alone is operating?
In an experiment on parapsychology a scientist wants to investigate how well a subject can correctly guess what symbol the experimenter is thinking of. The experimenter chooses from 4 different possible symbols. To avoid bias the experimenter uses a random number table to select a symbol to concentrate on for each trial. Assuming the experiment is not biased what are the probabilities for the following outcomes if chance alone is operating?

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