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

question 84

Multiple Choice

A researcher is interested in estimating the mean weight of a semi tractor 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.The 90% confidence interval for the population mean weight of a semi tractor truck is ______________.

• A)19,365 to 20,635
• B)19,367 to 20,633
• C)19,514 to 20,486
• D)19,515 to 20,485
• E)18,500 to 21,500

---

Definitions:

Marketing Plan

A comprehensive document that outlines a company's overall marketing effort, including strategies, objectives, and actions to achieve marketing goals.

Valid Assumptions

Assumptions that are logically justified and supported by evidence or sound reasoning.

Historical Data

Information from the past used for research, analysis, and planning by providing context or comparison for current conditions or forecasts.

Alternative Contingencies

Different or backup plans developed to address potential future events or circumstances that may impact objectives.