Two of the Most Common Wood Species Used for Scaffold

question 11

Multiple Choice

Two of the most common wood species used for scaffold planks are southern yellow pine and ____.

• A)Ponderosa pine
• B)Western hemlock
• C)Atlas cedar
• D)Douglas fir

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Definitions:

Sampling

The process of selecting a subset of individuals from a population to estimate characteristics of the whole population.

Stratified Random Sampling

A method of sampling from a population where the population is divided into distinct subgroups and samples are drawn from each subgroup.

Simple Random Sampling

A sampling method where each member of the population has an equal chance of being selected, ensuring the sample's representativeness.

Mutually Exclusive

Events that cannot occur at the same time, indicating a scenario where the happening of one event precludes the occurrence of the other.