In a Particular City, the Average Annual Salary for Secretaries

Multiple Choice

In a particular city, the average annual salary for secretaries is $28,000. A sample of secretaries from Company A shows an average annual salary of $24,500 with a
Population standard deviation of $4500. Secretaries at Company A claim they are paid
Less than the city average. What is the test value for this claim?

A) 5.50
B) -5.50
C) -0.78
D) 0.78