In a Major Study by the Statistics Classes at Jefferson

question 25

Essay

In a major study by the statistics classes at Jefferson High School, parking spaces were examined for compliance with the requirement to put money in the meters. Overall, the students found that 80% of metered parking places had meters that had not expired, and 20% had expired. If the traffic officer in charge of ticketing cars with expired meters, and starts at a random location in the City, what is the probability he or she will find an expired meter before the 3rd one?

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Definitions:

Denialism

The choice to deny reality as a way to avoid a psychologically uncomfortable truth.

Cognitive Inertia

The tendency of individuals to rely on familiar assumptions and exhibit a reluctance to revise their thinking.

Significant Level

In statistical hypothesis testing, the threshold of probability at which the null hypothesis is rejected, commonly set at 0.05 or 5% risk of concluding a false positive.

Probability

The measure of the likelihood that an event will occur, quantified as a number between 0 and 1.