A Researcher Is Interested in Testing to Determine If the Mean

question 56

Multiple Choice

A researcher is interested in testing to determine if the mean price of a casual lunch is different in the city than it is in the suburbs. The null hypothesis is that there is no difference in the population means (i.e.the difference is zero) . The alternative hypothesis is that there is a difference (i.e.the difference is not equal to zero) . He randomly selects a sample of 9 lunch tickets from the city population resulting in a mean of $14.30 and a standard deviation of $3.40.He randomly selects a sample of 14 lunch tickets from the suburban population resulting in a mean of $11.80 and a standard deviation $2.90.He is using an alpha value of .10 to conduct this test.Assuming that the populations are normally distributed,the critical t value from the table is _______.

• A) 1.323
• B) 1.721
• C) 1.717
• D) 1.321
• E) 2.321

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Definitions:

Benchmarking

The practice of comparing business processes and performance metrics to industry bests and best practices from other companies.

Australian Company

A business entity that is registered and operates in Australia, abiding by the country's corporate laws and regulations.

Local Conditions

The specific environmental, economic, and social conditions or circumstances that exist in a particular location or community.

World Best Practice

A benchmarking term referring to the highest current performance standards or methods in an industry or area of activity globally.