THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 31

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Suppose that the waiting times for patients at a local hospital are normally distributed with known population standard deviation of 30 minutes.A random sample of 75 patients in the local hospital had a mean time of 90 minutes.Assume a 95% confidence interval for the population mean μ.
-What is the formula used to calculate the standard error?

• A)σ /
• B)σ² /
• C)σ / n
• D)σ / n²

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Definitions:

Harvester

An individual or machine that gathers crops or other natural resources from fields or natural habitats.

Storage Yard

A designated outdoor area used for the keeping of goods, materials, vehicles, or equipment.

Common Carriers

Businesses that provide transportation services to the public under the regulation of government agencies, typically involving the conveyance of goods or people.

Warehouse Companies

Businesses specializing in storing goods in large buildings known as warehouses until they are sold or distributed.