A Manager of the Credit Department for an Oil Company

question 52

Multiple Choice

A manager of the credit department for an oil company would like to determine whether the mean
Monthly balance of credit card holders is equal to $75.An auditor selects a random sample of 100
Accounts and finds that the mean owed is $83.40 with a sample standard deviation of $23.65.If
You were to conduct a test to determine whether the auditor should conclude that there is
Evidence that the mean balance is different from $75, which test would you use?

• A) Z-test of a population mean
• B) Z-test of a population proportion
• C) t-test of population mean
• D) t-test of a population proportion

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Definitions:

Euphoric

A sensation of profound joy and exhilaration.

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A type of sexual dysfunction characterized by a persistent or recurrent absence of sexual fantasies and desire for sexual activity.

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The ability to resist or delay an impulse, drive, or temptation to act and is related to self-regulation and emotional control.