The Owner of a Local Karaoke Bar Has Recently Surveyed

question 34

Multiple Choice

The owner of a local Karaoke Bar has recently surveyed a random sample of n = 300 customers of the bar.She would now like to determine whether or not the mean age of her customers is over 35.If so,she plans to alter the entertainment to appeal to an older crowd.If not,no entertainment changes will be made.If she wants to be 99% confident in her decision,what rejection region she use if the population standard deviation σ is known?

• A)Reject H₀ if z < −2.33
• B)Reject H₀ if z < −2.58
• C)Reject H₀ if z > 2.33
• D)Reject H₀ if z > 2.58

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Definitions:

Underdeveloped Country

A nation with a lower standard of living, underdeveloped industrial base, and low Human Development Index (HDI) compared to other countries.

Glucose

A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.

Skeletal Muscles

The muscles attached to the bones of the skeleton, responsible for movement and stability of the body.

Liver

A large, vital organ in the body performing essential functions such as detoxification, protein synthesis, and the production of biochemicals necessary for digestion.