The Dean of a Business School Claims That the Average

question 110

Multiple Choice

The dean of a business school claims that the average starting salary of its graduates is more than $50,000. It is known that the population standard deviation is $10,000. Sample data on the starting salaries of 25 randomly selected recent graduates yielded a mean of $52,000. What is the value of the sample test statistic?

• A) z = 1.0
• B) t = 7.2
• C) t = 5.04
• D) t = 1.22
• E) None of these statements are true

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