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)

---

Definitions:

Hue

A color or shade in the color spectrum, defined by its wavelength of light.

Perceived Color

The characteristic of visual perception that is described through color categories such as red, blue, green, etc., which depends on the wavelength of light and interpretation by the brain.

Brightness

The perception of how luminous an object appears, often influenced by the intensity of the light it emits or reflects.

Saturation

In color theory, saturation refers to the intensity of a color; how pure it is in comparison to gray.