A Sample Is Selected from a Population with μ =

question 38

Multiple Choice

A sample is selected from a population with μ = 46 and a treatment is administered to the sample.After treatment, the sample mean is M = 48 with a sample variance of s² = 16.Based on this information, the size of the treatment effect, as measured by Cohen's d, is ____.

• A)d = 0.125
• B)d = 0.25
• C)d = 0.50
• D)Cohen's d cannot be computed without knowing the sample size.

---

Definitions:

Strong

In the context of materials, it refers to the ability to withstand force or pressure without breaking or deforming.

Air Pressure

The force exerted by the weight of air on the Earth's surface, influencing weather patterns and conditions.

Altitude

The height or elevation of a point above a specific reference level, usually above sea level.

Explanatory

Pertaining to a variable in a statistical model that is used to explain or predict changes in a response variable.