A Certain Manufacturer Is Interested in Evaluating Two Alternative Manufacturing

question 94

Multiple Choice

A certain manufacturer is interested in evaluating two alternative manufacturing plans consisting of different machine layouts. Because of union rules, hours of operation vary greatly for this particular manufacturer from one day to the next. Twenty-eight random working days were selected and each plan was monitored and the number of items produced each day was recorded. some of the collected data is shown below:

$$\begin{array} { c | c | c } \text { DAY } & \text { PLAN 1 OUTPUT } & \text { PLAN 2 OUTPUT } \\\hline 1 & 1234 \text { units } & 1311 \text { units } \\2 & 1355 \text { units } & 1366 \text { units } \\3 & 1300 \text { units } & 1289 \text { units }\end{array}$$ What type of analysis will best allow the manufacturer to determine which plan is more effective?

• A) An independent samples comparison of population means.
• B) An independent samples comparison of population proportions.
• C) A paired difference comparison of population means.
• D) A test of a single population proportion.

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Definitions:

Heritability

Heritability refers to the proportion of variation among individuals that can be attributed to their genetic differences, often studied in the context of traits or behaviors.

Constant Over Time

A situation or condition that remains unchanged throughout different periods.

Single Case

An in-depth study or analysis of a single instance, event, or subject as a method of research.

Cultural-Familial Retardation

A concept referring to intellectual disability that may result from environmental factors and may not have a clear genetic or biological cause.