A Researcher Is Interested in Studying Attitudes About Raw Milk

question 72

Multiple Choice

A researcher is interested in studying attitudes about raw milk sales and has reason to believe that urban,suburban,and rural groups will vary in their responses.The researcher knows that the population being studied is 50% urban,40% suburban,and 20% rural.She classifies the potential participants as urban,suburban,or rural residents,and then,for a sample totaling 100,randomly selects 50 individuals from the urban group,40 from the suburban group,and 20 from the rural group.The researcher is using a(n) ____.

• A)proportional stratified sample
• B)balanced stratified sample
• C)even stratified sample
• D)primary stratified sample

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Definitions:

Change-of-Base Formula

A mathematical formula used to convert a logarithm of one base to a logarithm of another base.

Properties of Logarithms

The rules that govern the operations of logarithms, such as the product, quotient, and power rules.

Logarithm

The exponent that a base, typically 10 or e, needs to be elevated to in order to generate a specific number.

Graph

A visual representation of data, functions, or equations, typically plotted with an x and y axis.