Which of the Following Statements Are Not True?
A) a Correct

question 8

Multiple Choice

Which of the following statements are not true?

• A) A correct interpretation of a \(100 ( 1 - \alpha ) \%\)
• Confidence interval for the mean \(\mu\)
• Relies on the long-run frequency interpretation of probability.
• B) It is correct to write a statement such as \(P [ \mu \text { lies in the interval } ( 70,80 ) ] = .95\)
• C) The probability is .95 that the random interval \(\bar { X } \pm 1.96 \cdot \sigma / \sqrt { n }\)
• Includes or covers the true value of \(\mu\)
• )
• D) The interval \(\bar { x } \pm 1.645 \cdot \sigma / \sqrt { n }\)
• Is a 90% confidence interval for the mean \(\mu\)
• )
• E) None of the above statements are true.

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Definitions:

Actual Costs

The real expenses that a company incurs in producing goods or services.

Standard Costs

Predetermined costs assigned to goods and services, used as a benchmark for evaluating actual production costs.

Efficiency

The degree to which a process uses resources optimally to achieve a desired outcome.

Standards

Established norms or criteria in various fields that act as a basis for comparison or compliance.