A Recent Study Compared the Time Spent Together by Single

question 92

Multiple Choice

A recent study compared the time spent together by single and dual-earner couples. According to
The records kept during the study, the mean amount of time spent together watching TV among
Single-earner couples was 61 minutes per day, with a standard deviation of 15.5 minutes. For the
Dual-earner couples, the mean time was 48.4 and the standard deviation was 18.1. At a 0.01
Significance level, can we conclude that the single-earner couples on average spend more time
Watching TV together? There were 15 single-earner and 12 dual-earner couples studied. State the
Decision rule, the value of the test statistic, and your decision.

• A) Reject if t > 2.485, t = 1.91, insufficient evidence to say that single-earner couples spend more time watching TV together.
• B) Reject if t > 2.485, t = 2.11, insufficient evidence to say that single-earner couples spend more time watching TV together.
• C) Reject if t > 2.473, t = 1.95, insufficient evidence to say that single-earner couples spend more time watching TV together.
• D) Reject if t > 2.473, t = 2.55, single-earner couples spend more time watching TV together.
• E) Reject if t > 2.485, t = 2.55, single-earner couples spend more time watching TV together.

Understand the differential effectiveness of psychotherapeutic approaches based on client problems and stages of change.

Recognize the necessity of tailoring psychotherapeutic interventions to match the client’s stage of change and problem severity.

Understand the importance of addressing multi-level problems in psychotherapy for long-term change.

Understand the principles of classical conditioning, including stimulus-response relationships.

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Definitions:

Risk-Free Return

The theoretical return attributed to an investment with zero risk, typically associated with government bonds.

Jensen Portfolio

A portfolio evaluated using Jensen's Alpha, which measures the excess return of the portfolio over the predicted return by the CAPM model for its level of risk.

Treynor Measures

Financial metrics used to assess the returns earned on a portfolio in excess of that which could have been earned on a risk-free investment, per each unit of market risk.

Sharpe Measure

A ratio developed by William F. Sharpe to measure risk-adjusted performance of an investment, calculating how much excess return you are receiving for the extra volatility that you endure for holding a riskier asset.