TABLE 12-20 Three New Different Models of Compact SUVs Have Just Arrived

question 126

Multiple Choice

TABLE 12-20
Three new different models of compact SUVs have just arrived at the market. You are interested in comparing the gas mileage performance of all three models to see if they are the same. A partial computer output for twelve compact SUVs of each model is given below:

You are told that the gas mileage population distributions for all three models are not normally distributed.
-Referring to Table 12-20, what should be the null and alternative hypotheses of the test?

• A) H₀: M₁ = M₂ = M₃ vs. H₁: M₁ ≠ M₂ ≠ M₃
• B) H₀: M₁ = M₂ = M₃ vs. H₁: M₁ ≠ M₂ = M₃
• C) H₀: M₁ = M₂ = M₃ vs. H₁: M₁ = M₂ ≠ M₃
• D) H₀: M₁ = M₂ = M₃ vs. H₁: Not all Mⱼ are equal (where j = 1, 2, 3)

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Definitions:

Euphoria

A feeling of intense excitement and happiness.

Connections

Relationships or associations between people, groups, or institutions, often providing benefits such as support or access to information.

Positive Institution

Structures or establishments in society that contribute to the wellbeing and positive functioning of individuals or communities.

Positive Affect

A dimension of emotional states characterized by feelings of joy, enthusiasm, and contentment.