An HR Manager in a Factory Conducted an Analysis of the Relationship

question 9

Multiple Choice

An HR manager in a factory conducted an analysis of the relationship between duration of production line staff lunch breaks (measured in minutes daily) and staff productivity (measured by increased number of products produced per day) . He had found that there was a positive relationship between the predictor and the outcome variable. However when he introduced the variable consumption of sugary snacks (measured by number consumed per lunch break) he found that the strength of the original relationship weakened. How might he now summarise the relationship between lunch break duration and staff productivity

• A) It has an indirect effect mediated by sugary snack intake
• B) It has a direct effect mediated by sugary snack intake
• C) It has no effect at all
• D) It has no significant relationship.

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Definitions:

Hypotheses

Plural of hypothesis; proposed explanations made on the basis of limited evidence as a starting point for further investigation.

Critical Value

A limit in hypothesis testing that sets the dividing line between the area where the null hypothesis is accepted and the area where it is rejected.

Hypotheses

Proposed explanations or predictions that are based on limited evidence as a starting point for further investigation.

Alpha

Typically refers to the level of significance in statistical hypothesis testing, representing the likelihood of rejecting a true null hypothesis.