A Researcher Conducts an Independent-Measures Study Examining the Effectiveness of a Group

question 81

Essay

A researcher conducts an independent-measures study examining the effectiveness of a group exercise program at an assisted living facility for elderly adults.One group of residents is selected to participate in the program,and a second group serves as a control.After 6 weeks,the researcher records a combined score measuring balance and strength for each individual.The data are as follows:
$$\begin{array} { c c } \text { Control } & \text { Exercise } \\\hline n = 10 & n = 15 \\M = 12 & M = 15.5 \\S S = 120.5 & S S = 190.0\end{array}$$
a.Does the exercise program have a significant effect? Use an alpha level of .05, two
tails.
b.Compute Cohen's d to measure the size of the treatment effect.

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Definitions:

Judicious Guidance

Wisdom or advice given in a careful and sensible manner, often to aid decision-making or influence behavior positively.

Basic Biological Needs

fundamental physiological requirements that organisms need to maintain life, such as food, water, air, and shelter.

Social Interactions

The process by which individuals act and react in relation to others, influencing each other's behaviors and thoughts in the context of societal norms.

Chronically Undernourished

Describes a state of long-term lack of adequate nutrition required for healthy living and physical well-being.