Suppose That a Researcher Wants to Check to See If

question 20

Multiple Choice

Suppose that a researcher wants to check to see if the average household income in
Webster Groves,Missouri,has changed from the $60,000 it was three years ago.The
Researcher takes a random sample of households in Webster Groves and finds that the average income of these households is $58,000.If the standard error of the mean for this sample is $500,what is the approximate conclusion produced by the Z-test if the critical Z-value is 1.96?

• A)Accept the null hypothesis
• B)Reject the research hypothesis of interest
• C)Accept the hypothesis of the status quo
• D)Reject the null hypothesis and accept the research hypothesis
• E)Reject the research hypothesis

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Definitions:

Gallons of Milk

A volumetric measurement commonly used to quantify liquid milk in a specified quantity for consumption, production, or sale.

Service Level

A measurement used in management to define the standard of performance aimed to be achieved in delivering services or products to customers.

Standard Deviation

A statistical indicator that quantifies the spread of scores or values around the mean in a dataset, illustrating the variability or consistency among the data.

Fresh Gallon

A measurement indicating a gallon of a freshly produced or provided liquid, such as milk or paint.