A Researcher Is Interested in Estimating the Mean Weight of a Semi

question 52

Multiple Choice

A researcher is interested in estimating the mean weight of a semi tracker truck to determine the potential load capacity.She takes a random sample of 17 trucks and computes a sample mean of 20,000 pounds with sample standard deviation of 1,500.She decides to construct a 98% confidence interval to estimate the mean.The degrees of freedom associated with this problem are _______.

• A) 18
• B) 17
• C) 16
• D) 15
• E) 20

---

Definitions:

12-Hour Night Position

A work shift or scheduling system that entails personnel working through the night for a period of 12 hours.

Day/Evening Rotation

A work schedule that alternates between day and evening shifts, often seen in healthcare settings.

Ineffective Denial

A psychological defense mechanism where an individual refuses to accept reality, causing harm or worsening situations.

Amyotrophic Lateral Sclerosis

A progressive neurodegenerative disease affecting nerve cells in the brain and spinal cord, leading to muscle weakness and atrophy.