7.1 For each of the following probabilities, state whether the relative-frequenc

Question

7.1 For each of the following probabilities, state whether the relative-frequency approach or personal probability would be most appropriate for determining the probability: (a) Tom, the manager of a small apartment complex, recently installed new doorbells for each apartment. According to Tom, about of the doorbells will not be working in 6 months and will need replacing. (b) The manufacturer of the doorbells used by Tom in his apartment complex reports that the probability a doorbell will become defective within the 6-month warranty period

Explanation / Answer

(a) In this problem, the personal probability approach would be most appropriate because Tom is guessing that the probability will be around 1/4.

(b) In this problem, the relative frequency approach would be most appropriate because it has been calculated, using the relative frequency, that the probability will be 0.03.

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