An Accounting Firm Is Planning for the Next Tax Preparation

question 46

Multiple Choice

An accounting firm is planning for the next tax preparation season. From last year's returns, the firm collects a systematic random sample of 100 filings. The 100 filings showed an average preparation time of 90 minutes with a standard deviation of 140 minutes.
What is the probability of finding a sample mean less than 18 hours?

• A) 0.4820
• B) 0.4920
• C) 0.0080
• D) 0.0180
• E) None of the choices are correct

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Definitions:

Eggs

Oval or round objects laid by female birds, reptiles, fish, and invertebrates, often containing a developing embryo.

Chemical Element

A pure substance consisting entirely of one type of atom, distinguished by its atomic number, which is the number of protons in its nuclei.

Metal

A category of elements that are typically hard, opaque, shiny, and good conductors of electricity and heat.

Transcendentalists

A group of 19th-century American philosophers and writers who believed in the inherent goodness of people and nature, emphasizing self-reliance and individualism.