Exhibit 19-2 Students in Statistics Classes Were Asked Whether They Preferred a Preferred

question 12

Multiple Choice

Exhibit 19-2
Students in statistics classes were asked whether they preferred a 10-minute break or to get out of class 10 minutes early. In a sample of 150 students, 40 preferred a 10-minute break, 80 preferred to get out 10 minutes early, and 30 had no preference. We want to determine if there is a difference in students' preferences.
-Refer to Exhibit 19-2. The test statistic based on the number of students who preferred to get out early equals

• A)1.825
• B)0.67
• C)0.82
• D)3.65

---

Definitions:

Radioactive Isotopes

Variants of chemical elements that exhibit radioactivity, used in various applications including medicine, research, and energy generation.

Alpha Particles

Heavily charged particles consisting of two protons and two neutrons, emitted during radioactive decay.

Nuclear Fusion

A nuclear reaction where two light atomic nuclei combine to form a heavier nucleus, releasing a significant amount of energy.