A Researcher Wished to Compare the Effect of the Frequency

question 21

Multiple Choice

A researcher wished to compare the effect of the frequency of the rate of stepping on heart rate in a step-aerobics workout. A collection of 30 adult volunteers, 15 women and 15 men, was selected from a local gym. The men were randomly divided into three groups of five subjects each. Each group did a standard step-aerobics workout, with group 1 at a low rate of stepping, group 2 at a medium rate of stepping, and group 3 at a rapid rate. The women were also randomly divided into three groups of five subjects each. As with the men, each group did one of the three standard step-aerobics workouts. The mean heart rate at the end of the workout for all subjects was determined (in beats per minute) . A partial ANOVA table for these data is given below. Analysis of variance for heart rate: The pooled standard error is:

• A)15.5.
• B)75.9.
• C)240.1.
• D)5762.

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Definitions:

Chamber of Commerce

An association of business owners and professionals aimed at promoting and protecting the interests of its members within a community.

Clergy

Ordained leaders of a religious faith, responsible for overseeing religious services and providing spiritual guidance.

Center of Influence

An individual or entity that possesses significant sway or authority within a community, often used in marketing to access broader networks.

Day Care Center

A facility that offers care and educational activities for young children during the day while their guardians are at work or otherwise engaged.