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?
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?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 3GP
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