The Z-Distribution Is Used to Estimate a Population Mean for Large

question 18

Multiple Choice

The z-distribution is used to estimate a population mean for large samples if the population standard deviation is known."Large" is usually defined as _______.

• A)at least 10
• B)at least 5% of the population size
• C)at least 30
• D)at least 12
• E)at least 100

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Definitions:

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