Dr. Chung, a renowned dietitian, has consistently proclaimed the benefits of a balanced breakfast. To substantiate his claim, he asks participants to go without breakfast for one week

he following week he asks the same participants to make sure they eat a complete breakfast. Following each week, Dr. Chung asks each participant to rate their productivity for that week.

Participant Performance with Breakfast Performance without Breakfast
#1 8 6
#2 6 6
#3 8 5
#4 8 5

Using a = .05, do a one-tailed test of the doctor's hypothesis.


t =3.464, P < .05, reject the null hypothesis.

Social Work & Human Services

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Interaction effects occur when

A) there is an imbalance in the experimental and control group at the beginning of an experiment during the pretest. B) an experimenter expectancy occurs and there is a diffusion of the treatment at the same time. C) external validity and reactivity cannot be controlled by a double-blind experimental design. D) in a factorial design, the impact of two variables operating in combination is greater than each of them added together. E) instrumental effects cause history effects to get large and ruin the posttest.

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A person with power of position will have power stemming from:

A) Their position in the hierarchy of an organization. B) Their strategic location in an agency or workforce. C) Their networks and contacts. D) Information that only they know.

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Asperger's disorder involves restricted repetitive patterns of behavior, preoccupation with

parts of objects and impaired social communication. Indicate whether the statement is true or false

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1. Religion is characterized as:

a. Indistinct from spirituality b. Basic set of principles about how people should behave toward others c. Proves there is an afterlife d. Punishes non-believers.

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