TABLE 12-17 Three New Different Models of Compact SUVs Have Just Arrived

question 112

Multiple Choice

TABLE 12-17
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 12-17,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 M_j are equal (where j = 1,2,3)

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Definitions:

Second Shell

Refers to the second energy level or electron shell of an atom, which can hold up to eight electrons.

Electrons

Negatively charged particles present in all atoms that serve as the main conduits for electrical current in solid materials.

Hydrophilic

Hydrophilic substances are those that have an affinity for water, meaning they can dissolve in, absorb, or be wetted by water.

Polar

Relating to the extreme northern or southern regions of the Earth, characterized by extreme cold and ice-covered landscapes.