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

question 61

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 study's results report the following summary statistics for the two periods. Using a 5% confidence level, which of the following is correct?

• A) Reject H₀: µ₁ − µ₂ ≤ 0 and therefore do not conclude that relative to the 1981 levels, 6- to 12-year-old children spent less time in 2008 on household chores.
• B) Do not reject H₀: µ₁ − µ₂ ≤ 0 and therefore conclude that relative to the 1981 levels, 6- to 12-year-old children spent less time in 2008 on household chores.
• C) Reject H₀: µ₁ − µ₂ ≤ 0 and therefore conclude that relative to the 1981 levels, 6- to 12-year-old children spent less time in 2008 on household chores.
• D) Do not reject H₀: µ₁ - µ₂ ≤ 0 and therefore do not conclude that relative to the 1981 levels, 6- to 12-year-old children spent less time in 2008 on household chores.

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Definitions:

Background Factors

The underlying conditions or influences that shape an individual's behavior, attitudes, or achievements, often considered in studies of social and psychological development.

Uniform Crime Report

An annual report compiled by the FBI to track the incidence of crime in the United States and to provide statistics.

Crime In The United States

Refers to unlawful acts punishable by the state that occur within the United States, with its nature, frequency, and legal responses varied across regions.

Norm Violations

Actions or behaviors that go against the accepted standards or rules of a society or group, often eliciting negative responses from others.