A P/OM Student Has Purchased a Four-Function Calculator for Use

question 13

Multiple Choice

A P/OM student has purchased a four-function calculator for use during exams.This calculator is perfectly reliable except for two parts: its microchip,which has a failure rate of one in every twenty hours of operation; and its battery,which has a failure rate of one in every ten hours of operation.Also,on average the battery will fail in five hours,with a standard deviation of 30 minutes.Assuming that a new battery has just been installed,what is the probability that the battery will perform reliably during a one-hour exam?

• A)0.05
• B)0.10
• C)0.20
• D)0.90
• E)0.95

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Definitions:

Similarities

Refers to the aspects in which two or more objects, ideas, or concepts are alike, often used to identify common traits or patterns.

Heuristic

A heuristic is a simple, efficient rule, whether hard-coded by evolutionary processes or learned, which helps in making decisions, forming judgments, or solving problems.

Making Risky Decisions

The process of making choices under conditions of uncertainty, where the outcomes could involve significant loss or gain.

Bets

Bets involve making a wager on the outcome of an uncertain event, with the anticipation of winning a reward.