Use the 68-95-99.7 Rule to Solve the Problem

question 79

Multiple Choice

Use the 68-95-99.7 rule to solve the problem.
-The amount of Jen's monthly phone bill is normally distributed with a mean of $70 and a standard deviation of $9. What percentage of her phone bills are between $43 and $97?

• A)68%
• B)95%
• C)99.9%
• D)99.7%

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Definitions:

Installment Sales

A sales method that allows customers to pay for goods or services over a period of time in installments.

Critical Event

A significant occurrence that has a profound impact on an entity's operations or financial performance, necessitating special consideration in accounting and financial reporting.

Measurability Conditions

Criteria that determine when revenue can be recognized in the accounting process, ensuring it can be reliably measured.

Percentage-Of-Completion Method

An accounting method used to recognize revenue and expenses of long-term projects proportionally with the degree of completion.