Guilt in decision making. The Journal of Behavioral Decision Making (January 2007) published a study of how guilty feelings impact on-the-job decisions. In one experiment, 57 participants were assigned to a guilty state through a reading/writing task. Immediately after the task, the participants were presented with a decision problem where the stated option had predominantly negative features (e.g., spending money on repairing a very old car). Of these 57 participants, 45 chose the stated option. Suppose 10 of the 57 guilty-state participants are selected at random. Define x as the number in the sample of 10 who chose the stated option.
- a. Find P (x = 5).
- b. Find P (x = 8).
- c. What is the
expected value (mean) of x?
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