A Sample of N = 25 Scores Has a Mean

question 79

Multiple Choice

A sample of n = 25 scores has a mean of M = 40 and a standard deviation of s = 10.What is the estimated standard error for the sample mean?

• A)4
• B)2
• C)2.5
• D)1

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Definitions:

Compacted Shells

Refers to shells that have been tightly packed together, often found in marine or beach environments, potentially affecting soil drainage and plant growth.

Limestone

A sedimentary rock composed mainly of calcium carbonate, often used in building materials and is a key ingredient in cement.

Tailings

The materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.

Ore

A naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.