Find the Requested Confidence Interval $37,14,21,20$ , 23 Assuming $\sigma = 7.84$

question 65

Multiple Choice

Find the requested confidence interval.
-A college statistics professor has office hours from 9:00 A.M. to 10:30 A.M. daily. A sample of waiting times to see the professor (in minutes) is 10, 12, 20, 15, 17, 10, 30, 28, 35, 28, 19, 27, 25, 22, 33, $37,14,21,20$ , 23. Assuming $\sigma = 7.84$ , find the $95.44 \%$ confidence interval for the population mean.

• A)\(18.8\) to \(25.8\) minutes
• B) \(- 3.5\) to \(3.5\) minutes
• C) \(- 7.7\) to \(7.8\) minutes
• D) \(19.5\) to \(35.1\) minutes

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Definitions:

Principle of Exceptions

A management principle focusing attention and resources on areas that deviate significantly from standards or expectations.

Standard Costs

Predetermined costs for materials, labor, and overhead used as a benchmark for evaluating actual production costs.

Factory Overhead Cost Variance

The difference between the actual factory overhead costs incurred and the expected (or budgeted) overhead costs based on standard cost accounting.

Flexible Factory Overhead Budget

A budget that adjusts overhead costs in response to changes in actual production or activity, allowing for more accurate costing.