The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,508 hours. The population standard deviation is 840 hours. A random sample of 49
The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,508 hours. The population standard deviation is 840 hours. A random sample of 49
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Question
The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the
7,508
hours. The population standard deviation is
840 hours.
A random sample of
49
light bulbs indicates a sample mean life of
7,328
hours.
Let
μ
be the population mean. Determine the null hypothesis,
H0,
and the alternative hypothesis,
H1.
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