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The probability that Jessica is on time for a given class is 64 percent. If there are 53 classes during the semester, what is the best estimate of the number of times out of 53 that Jessica is on time to class? Round your answer to the nearest integer.
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Using the principle of probability, the estimated number of times Jessica will be on time is 34.

Given the Parameters :

  • Probability of being on time, p = 64% = 0.64

  • Total number of classes, n = 53

The best estimate for the number of times Jessica will be on time can be calculated thus :

  • Mean = np

Hence, we have ;

Mean number of times = (0.64 × 53)

Mean number of times = 33.92

Hence, the estimated number of times Jessica will be on time is 34.

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