Business Research Test with Answers

Satisfactory Essays
* Question 1
0 out of 2 points | | | An undergraduate business student has purchased a laptop computer for use during exams. This laptop 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. In addition, on average the battery will wear out 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?Answer | | | | | Selected Answer: | 0.05 | Correct Answer: | 0.9 | | | | | * Question 2
2 out of 2 points | | | The Ready Light Company produces a flashlight, which is perfectly reliable except for two components: the battery, which has a random failure rate of one in every five hours of operation; and the light bulb, which has a random failure rate of three in every ten hours. If the company includes a backup light bulb with each flashlight, what is the probability that the flashlight will perform reliably for one hour (excluding light bulb replacement time, if any)?Answer | | | | | Selected Answer: | 0.7280 | Correct Answer: | 0.7280 | | | | | * Question 3
0 out of 2 points | | | The Ready Light Company produces a flashlight, which is perfectly reliable except for two components: the battery, which has a random failure rate of one in every five hours of operation; and the light bulb, which has a random failure rate of three in every ten hours. What is the probability that the battery will perform reliably for one hour?Answer | | | | | Selected Answer: | 0.2 | Correct Answer: | 0.8 | | | | | * Question 4
0 out of 2 points | | | The Ready Light Company produces a flashlight, which is perfectly reliable except for two components: the battery, which has a random failure rate of one in

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