An Environmental Group at a Local College Is Conducting Independent $\mu$

question 113

Multiple Choice

An environmental group at a local college is conducting independent tests to determine the distance a particular make of automobile will travel while consuming only 1 gallon of gas.A sample of five cars is tested and a mean of 28.2 miles is obtained.How many cars should the environmental group test if they wish to estimate $\mu$ ,mean miles per 1 gallon,to within 0.5 miles and be 99% confident? Assume a population standard deviation of 2.7 miles.

• A)25
• B)124
• C)194
• D)618
• E)619

---

Definitions:

Placed on Account

Transactions recorded on credit, affecting accounts payable or receivable without immediate cash exchange.

Debit Balance

A condition where the sum of debits in an account exceeds the sum of credits, indicating an expenditure or asset.

Credit Balance

A situation where the total credits in an account exceed the total debits, often reflecting a positive balance in financial accounts.

Notes Payable

Notes payable are written agreements where a borrower agrees to pay back a specified amount of money, plus interest, to a lender at a future date.