A Certain Manufacturer Is Interested in Evaluating Two Alternative Manufacturing

question 88

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 assumptions are necessary for the above test to be valid?

• A)None of these listed, since the Central Limit Theorem can be applied.
• B)The population variances must be approximately equal.
• C)Both populations must be approximately normally distributed.
• D)The population of paired differences must be approximately normally distributed.

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Definitions:

Community Psychology

A field within psychology focused on understanding individuals within their social contexts and addressing societal issues to improve community well-being.

Mental Health

A condition of good health where a person understands their own capabilities, manages daily stress effectively, contributes positively to society, and maintains productive work.

Intersectionality

A framework for understanding how aspects of a person's social and political identities (gender, race, class, sexuality, etc.) combine to create different modes of discrimination and privilege.

Action Research

A participatory research methodology focusing on problem-solving and improvement of practices through a cyclical process of planning, acting, observing, and reflecting.