MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Sampling Distribution - Question 6 Please solve with simple probability rules
6. The manufacturer of the XJ35 battery claims the mean life of the battery is 500 days with a standard deviation of 25 days. A government watchdog agency randomly selects 50 of the batteries and tests them for compliance. What is the probability the mean life of these batteries is less than 490 days?
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Transcribed Image Text:6. The manufacturer of the XJ35 battery claims the mean life of the battery is 500 days with a standard deviation of 25 days. A government watchdog agency randomly selects 50 of the batteries and tests them for compliance. What is the probability the mean life of these batteries is less than 490 days?
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