Exhibit 18-2 Students in Statistics Classes Were Asked Whether They Preferred a Preferred

question 19

Multiple Choice

Exhibit 18-2
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 18-2. The hypothesis is to be tested at the 5% level of significance. The decision rule is not to reject the null hypothesis if

• A)-1.96 < z < 1.96
• B)-1.645 < z < 1.645
• C)z > 1.96 or z < -1.96
• D)the number of "+" signs is greater than or equal to 20 and less than or equal to 130

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Definitions:

Robert M. La Follette

An American politician and reformer, remembered for his role as a leader of the Progressive Movement and as the Governor of Wisconsin.

Women's Suffrage

The movement for women's right to vote, culminating in legal reforms that granted female voting rights in various contexts and historical periods.

National Amendment

A change or addition to the Constitution of a nation, often requiring a specific process for ratification.

Constitutional Amendments

Changes or additions to the U.S. Constitution, proposed to adjust governance according to evolving societal values and needs, requiring ratification by a significant majority.