A Sample of N = 4 Scores Is Selected from a Population

question 55

Multiple Choice

A sample of n = 4 scores is selected from a population with μ = 50 and σ = 12.If the sample mean is M = 56,what is the z-score for this sample mean?​

• A)​0.50
• B)​1.00
• C)​2.00
• D)​4.00

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Definitions:

Confidence Level

The probability that a confidence interval will capture the population parameter in repeated samples.

Simple Linear Regression

A mathematical technique that represents the association between a single independent variable and a dependent variable through a linear formula.

API Gravity

A measure used to quantify the density of petroleum liquids relative to water, indicating how heavy or light the petroleum is.

Population Slope

The slope of the regression line that represents the relationship between two variables across the entire population.