A New Study Has Found That, on Average, 6- to 12-Year-Old

question 62

Multiple Choice

A new study has found that, on average, 6- to 12-year-old children are spending less time on household chores today compared to 1981 levels. Suppose two samples representative of the study's results report the following summary statistics for the two periods. Which of the following is the correct value of the test statistic assuming that the unknown population variances are equal?

• A) z = -5.73
• B) t₅₈ = 5.73
• C) z = 5.73
• D) t₅₉ = -5.73

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Definitions:

Compliance

the act of conforming to or following rules, standards, or demands placed upon an individual by authority, society, or internal standards.

Direct Order

An explicit command given by one person to another, requiring immediate compliance.

GEN-X

Generation X, referring to the cohort of people born approximately between the mid-1960s and early 1980s.

Industrial Goods

Products and materials used in the production process of other goods, rather than goods purchased directly by consumers.