Backup Alarms on Construction Vehicles Are

question 28

Multiple Choice

Backup alarms on construction vehicles are

• A)prohibited
• B)an administrative control
• C)an engineering control
• D)none of the above

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Definitions:

Chi-Squared Test

A statistical method employed to assess if the observed frequencies significantly differ from the expected frequencies across one or more categories.

Nominal Data

A type of categorical data for which the categories do not have a natural order or ranking.

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it depends on the chosen significance level.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, usually set before the experiment.