Suppose You Are Testing the Null Hypothesis That a Population

question 45

Multiple Choice

Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothesis that the population mean is greater than 46.The sample size is 25 and α =.05.If the sample mean is 50 and the population standard deviation is 8, the observed z value is _______.

• A)2.5
• B)-2.5
• C)6.25
• D)-6.25
• E)12.5

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Definitions:

Six Sigma

A set of techniques and tools for process improvement aimed at reducing defects and improving quality in manufacturing and business processes.

BPI

Business Process Improvement entails evaluating, analyzing, and enhancing business processes to optimize performance and meet best practice standards.

Automating Order Entry

The use of software or systems to enter orders into a processing system automatically, reducing manual efforts and errors.

BPI

Business Process Improvement involves a strategic approach to improve a company's core operations, aiming for increased efficiency.