A company has developed a new light bulb that seems to burn longer than most residential bulbs.
Question:
Bulb Burn
Mean ................. 2198.217
Standard deviation ............. 152.9907
Count .................. 84
Confidence level (90.0%) ......... 27.76691
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Related Book For
Business Statistics for Contemporary Decision Making
ISBN: 978-0470910184
6th Edition
Authors: Ken Black
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