Students in Statistics Classes Were Asked Whether They Preferred a 10-Minute

question 52

Multiple Choice

Students in statistics classes were asked whether they preferred a 10-minute break or to allow them go out of class 10 minutes early. In a sample of 150 students, 40 preferred a 10-minute break, 80 preferred going out 10 minutes early, and 30 had no preference. We want to determine if there is a difference in students' preferences. The null hypothesis that is being tested is

• A) H₀: μ = 150.
• B) H₀: μ = 75.
• C) H₀: p = .2.
• D) H₀: p = .5.

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Definitions:

Water Table

The level below which the ground is saturated with water, an important concept in hydrology and environmental science.

Aquifer

Porous rock layer that holds some groundwater.

Surface Water

Water that is found on the surface of the earth, such as rivers, lakes, and ponds, as opposed to groundwater.

Earth's Water

The total amount of water present on Earth, including oceans, seas, rivers, lakes, ice caps, glaciers, and moisture in the atmosphere.