Exhibit 8-4 In Order to Estimate the Average Electric Usage Per Month,a

question 58

Multiple Choice

Exhibit 8-4
In order to estimate the average electric usage per month,a sample of 81 houses was selected,and the electric usage was determined.Assume a population standard deviation of 450-kilowatt hours.
-Refer to Exhibit 8-4.If the sample mean is 1,858 KWH,the 95% confidence interval estimate of the population mean is

• A)1,760 to 1,956 KWH
• B)1,858 to 1,956 KWH
• C)1,760 to 1,858 KWH
• D)None of these alternatives is correct.

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Definitions:

Defense Mechanism

A defense mechanism is a psychological strategy unconsciously used to protect a person from anxiety arising from unacceptable thoughts or feelings.

Projection

A defense mechanism where an individual ascribes their own unwanted thoughts, feelings, or motives onto another person.

Dishonest Tax Returns

The act of knowingly providing false information on a tax return to reduce tax liability, which is illegal and subject to penalties.

Defense Mechanism

Psychological strategies brought into play by individuals, groups, or even nations, to cope with realities and to maintain self-image by concealing the motivations behind one’s behavior.