A Sample Obtained from a Population with σ = 12

question 64

Multiple Choice

A sample obtained from a population with σ = 12 has a standard error of 2 points.How many scores are in the sample?​

• A)​n = 36
• B)​n = 24
• C)​n = 6
• D)​n = 3

Calculate process capability indexes using real data to assess the capability of a manufacturing or production process.

Determine control limits for various types of control charts (e.g., p-charts) using provided data and statistical formulas.

Identify and clarify the distinction between control charts, run charts, specification limits, and tolerance levels in process control.

Analyze the role of statistical analysis and data in evaluating process output and then applying these insights to maintain or improve process control.

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Definitions:

Statistical Measure

A quantitative representation that describes a characteristic of a data set or population, such as mean or standard deviation.

Pop-off Valve

A safety device designed to release excess pressure from a system, such as an air tank or steam boiler, to prevent over-pressurization and potential damage.

Governor Cut-out Pressure

The maximum pressure at which an air compressor governor stops the compressor from pumping air into the air storage tanks, typically in air brake systems.

Governor Cut-in Pressure

The specific air pressure level at which an air compressor’s governor allows the compressor to start building air pressure in a pneumatic system.