Which of These Is an Application of Lasers

question 58

Multiple Choice

Which of these is an application of lasers?

• A) Lasers are integral parts of compact disc players.
• B) Lasers are used in surgeries.
• C) Lasers are integral parts of supermarket scanners.
• D) Lasers are used in surveying equipment.
• E) All of these

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Definitions:

Probability Sampling

A sampling method in which every member of the population has a known, non-zero chance of being selected, ensuring representativeness and allowing for the calculation of sampling error.

Systematic Sampling

A probability sampling method in which we randomly select one of the first k elements and then select every kth element thereafter.

Sample Proportion

The fraction of the sample that represents a particular outcome or characteristic.

Dormitories

Residential buildings on educational campuses where students live during academic terms.