The Mean Weight of Trucks Traveling on a Particular Section

question 40

Multiple Choice

The mean weight of trucks traveling on a particular section of Highway 401 is not known. A provincial highway inspector needs an estimate of the mean. He selects a random sample of 49 trucks passing the weighing station and finds the mean is 15.8 tons, with a standard deviation of the sample of 3.8 tons. What is the 95 percent interval for the population mean?

• A) 14.7 and 16.9
• B) 13.2 and 17.6
• C) 10.0 and 20.0
• D) 16.1 and 18.1
• E) None of the choices are correct

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Definitions:

Social Approval

The positive recognition or acceptance from others in a social context, often influencing behavior and self-perception.

Peers

Those of similar status.

Socialization Agents

Individuals, groups, or institutions that play significant roles in integrating individuals into society by teaching societal norms, values, and practices.

Social Learning Theory

A theory that proposes that new behaviors can be acquired by observing and imitating others.