Select the Question That Can Best Be Answered Through Experimentation

question 40

Multiple Choice

Select the question that can best be answered through experimentation.

• A) Do children from upper classes drink more carbonated beverages than those from lower classes?
• B) Will Chevron gasoline with XYZ additive provide better mileage than Chevron without the additive?
• C) Does the average male use cosmetics?
• D) Is the standard of living higher today than ten years ago?
• E) How often do Chevron's customers purchase gasoline?

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Definitions:

Two-tail Test

A statistical test in which the critical area of a distribution is two-sided and tests whether a sample is either greater than or less than a range of values.

Nominal Data

Data that represents categories with labels or names, where the order of the categories is not meaningful.

Z-test

A statistical test used to determine whether two population means are different when the variances are known and the sample size is large.

Chi-square Test

A statistical test used to determine if there is a significant difference between the observed frequencies and the expected frequencies in one or more categories.