TABLE 2-5
The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. 
-Referring to Table 2-5, if 100 calls were randomly sampled, ________ of them would have lasted at least 15 minutes but less than 20 minutes.
Definitions:
Hindsight Bias
The tendency to believe, after an event has occurred, that one would have predicted or expected the outcome, often known as the "I-knew-it-all-along" effect.
Testable Hypotheses
are theories or predictions that can be empirically tested through experimentation or observation to determine their validity.
Illusory Correlation
The perception of a relationship between two variables when no such relationship exists, often leading to cognitive biases.
Overconfidence
A cognitive bias where an individual's subjective confidence in their judgments is greater than their objective accuracy.
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