A Researcher Believes Exercise Reduces Anxiety in Women

question 22

Essay

A researcher believes exercise reduces anxiety in women. She identifies a group of women who had not exercised before, but are now planning to begin exercising. She gives them a 50-item anxiety inventory before they begin exercising and administers it again after 6 months of exercising. The anxiety inventory is measured on an interval scale and higher numbers indicate higher anxiety. In addition, scores on the inventory are normally distributed. The scores appear below.​

a) What statistical test should be used to analyze these data?
b) Identify H₀ and H_a for this study.
c) Conduct the appropriate analysis.
d) Should H₀ be rejected? What should the researcher conclude?
e)If significant, compute the effect size and interpret this.
f)If significant, draw a graph representing the data.
g)Calculate the 95% CI.

Identify the symptoms and characteristics of various sleep disorders such as narcolepsy, sleep apnea, and insomnia.

Understand the role of REM sleep and its implications on health and sleep quality.

Recognize the historical and psychological significance of dreams and the theorists associated with dream analysis.

Identify and classify psychoactive drugs based on their effects on mood, perception, and mental functioning.

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Definitions:

Marketing Mix

The combination of factors that can be controlled by a company to influence consumers to purchase its products.

Distribution Activities

The processes involved in making a product or service available for use or consumption by a consumer or business user.

Product

An item or service created through a process and offered to a market to satisfy a want or need.

Joint Venture

A joint venture is a strategic alliance where two or more parties, usually businesses, form a partnership to share markets, intellectual property, assets, knowledge, and profits.