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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 7520 hours. The population standard deviation is 980 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,310 hours. a. At the 0.05 level of​ significance, is there evidence that the mean life is different from 7520 hours?   a. Let μ be the population mean. Determine the null​ hypothesis, H0​, and the alternative​ hypothesis, H1.   H0​: μ ▼   greater than or equals≥ not equals≠ equals= less than or equals≤ enter your response here H1​: μ ▼   less than< not equals≠ equals= greater than> enter your response here

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 7520 hours. The population standard deviation is 980 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,310 hours. a. At the 0.05 level of​ significance, is there evidence that the mean life is different from 7520 hours?   a. Let μ be the population mean. Determine the null​ hypothesis, H0​, and the alternative​ hypothesis, H1.   H0​: μ ▼   greater than or equals≥ not equals≠ equals= less than or equals≤ enter your response here H1​: μ ▼   less than< not equals≠ equals= greater than> enter your response here

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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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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
7520
hours. The population standard deviation is
980 hours.
A random sample of
49
light bulbs indicates a sample mean life of
7,310
hours.
a. At the
0.05
level of​ significance, is there evidence that the mean life is different from 7520 hours?
 
a. Let
μ
be the population mean. Determine the null​ hypothesis,
H0​,
and the alternative​ hypothesis,
H1.
 
H0​:
μ
▼
 
greater than or equals≥
not equals≠
equals=
less than or equals≤
enter your response here
H1​:
μ
▼
 
less than<
not equals≠
equals=
greater than>
enter your response here
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