SCENARIO 9-1
Microsoft Excel was used on a set of data involving the number of defective items found in a random
sample of 46 cases of light bulbs produced during a morning shift at a plant.A manager wants to
know if the mean number of defective bulbs per case is greater than 20 during the morning shift.She
will make her decision using a test with a level of significance of 0.10.The following information
was extracted from the Microsoft Excel output for the sample of 46 cases: 
-True or False: Referring to Scenario 9-1, the evidence proves beyond a doubt that the mean
number of defective bulbs per case is greater than 20 during the morning shift.
Definitions:
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