Exhibit 9-1

question 57

Multiple Choice

Exhibit 9-1.A university is interested in promoting graduates of its honors program by establishing that the mean GPA of these graduates exceeds 3.50.A sample of 36 honors students is taken and is found to have a mean GPA equal to 3.60.The population standard deviation is assumed to equal 0.40. Refer to Exhibit 9-1.At a 5% significance level,the decision is to _____________.

• A)Reject H₀;we can conclude that the mean GPA is significantly greater than 3.50
• B)Reject H₀;we cannot conclude that the mean GPA is significantly greater than 3.50
• C)Do not reject H₀;we can conclude that the mean GPA is significantly greater than 3.50
• D)Do not reject H₀;we cannot conclude that the mean GPA is significantly greater than 3.50

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Definitions:

Air Pollution

The presence of substances in the air that are harmful to human health, the environment, or the climate.

Boreal Forest

A large biome of coniferous forest located in the northern regions of North America, Europe, and Asia, characterized by cold temperatures and short growing seasons.

Lichens

Symbiotic organisms composed of a fungus and a photosynthetic partner, often an alga or cyanobacterium.

Photochemical Oxidant

Chemical compounds formed by the reaction between sunlight and pollutants like hydrocarbons and nitrogen oxides, contributing to air pollution and smog.