A Researcher Wants to Make a 95% Confidence Interval for a Population

question 2

Short Answer

A researcher wants to make a 95% confidence interval for a population mean.She wants the margin of error to be within 1.9 of the population mean.The population standard deviation is 11.07.The sample size that will yield a margin of error within 1.9 of the population mean is:

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Definitions:

Direct Labor-Hours

A measure of the total hours worked directly on the manufacturing of goods.

Machine-Hours

A unit of measure indicating the operational time of machinery, often used in manufacturing to allocate costs based on machine usage.

Predetermined Overhead Rate

An estimated rate used to assign manufacturing overhead costs to individual units of production, calculated at the beginning of a period.

Machine-Hours

The total hours that production machinery is operated within a given period, rephrased as the aggregate operational time of production equipment.