The article Predicting Profit Performance for Selecting Candidate International
Chapter 6, Problem 9(choose chapter or problem)
The article “Predicting Profit Performance for Selecting Candidate International Construction Projects” (S. Han, D. Kim, and H. Kim, Journal of Construction Engineering and Management Science, 2007: 425–436) presents an analysis of the profit of international construction projects. In a sample of 126 projects, the average profit margin (in percent) was 8.24 with a standard deviation of 16.33. A test is made of \(H_{0}: \mu \geq 10 \text { versus } H_{1}: \mu<10\)
a. Find the P-value.
b. Do you believe that it is plausible that the mean profit margin is at least 10%, or are you convinced that it is less than 10%? Explain your reasoning.
Equation Transcription:
Text Transcription:
H_{0}: \mu \geq 10 \text { versus } H_{1}: \mu<10
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