Most New Immigrants Who Arrived During the Early Years of the Twentieth

question 7

Multiple Choice

Most new immigrants who arrived during the early years of the twentieth century:

• A) lived in close-knit communities.
• B) planned to remain in the United States temporarily.
• C) generally earned lower wages in America than in their former homelands.
• D) dominated skilled and supervisory jobs.

Differentiate between independent and dependent (matched pairs) samples.

Explain the rationale behind paired-difference experiments and their advantages.

Apply appropriate statistical methods to test hypotheses about means and variances in practical situations.

Calculate and interpret sample variances and confidence intervals for population variances.