Professors of Accountancy Are in High Demand at American Universities

question 92

Multiple Choice

Professors of accountancy are in high demand at American universities.A random sample of 28 new accounting professors found the average salary was $135 thousand with a standard deviation of $16 thousand.Assume the distribution is normally distributed.Construct a 90% confidence interval for the salary of new accounting professors.Answers are in thousands of dollars.

• A) [107.7520,162.2480]
• B) [129.8506,140.1494]
• C) [130.0260,139.9740]
• D) [131.0268,138.9732]