A College Dean Wants to Determine the Average Time It

question 2

Multiple Choice

A college dean wants to determine the average time it takes a student to get from one class to the next.Preliminary studies have shown that it is reasonable to let _t = 1.5 minutes the standard deviation of class travel times) .What is the sample size which should be examined if the dean wants to assert with a probability of 95 percent that his estimate, the mean time of the random sample, will not be "off" by more than .25 minutes in either direction) ? Choose the closest answer.

• A)72 or more, but not less
• B)81 or more, but not less
• C)139 or more, but not less
• D)200 or more, but not less
• E)None of the above

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Definitions:

Indirect Method

A technique used in cash flow statement preparation, adjusting net income for changes in non-cash accounts to arrive at operating cash flow.

Net Income

The net income a company earns once it has subtracted all costs and taxes from its revenues.

Operating Activities

Activities related to the primary operations of a company, including cash flows from sales, supply purchases, and payroll.

Equipment Purchases

Transactions involving the acquisition of physical assets for use in the production or supply of goods and services, typically considered as capital expenditure.