Essentials of Statistics for the Behavioral Sciences
Essentials of Statistics for the Behavioral Sciences
8th Edition
ISBN: 9781133956570
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 1, Problem 1P

A researcher is investigating the effectiveness of a treatment for adolescent boys who are taking medication for depression. A group of 30 boys is selected and half receive the new treatment in addition to their medication and the other half continue to take their medication without any treatment. For this study,

  1. a. Identify the population.
  2. b. Identify the sample.

(a)

Expert Solution
Check Mark
To determine

To identify: The population of the study.

Answer to Problem 1P

The population is all adolescent boys who are taking medication for depression.

Explanation of Solution

Given info:

A researcher is investigating the effectiveness of a treatment for adolescent boys who are taking medication for depression.

Justification:

Population:

A population is the entire set of the individuals of interest for a particular research question.

The study states that the population might be the adolescent boys who are taking medication for depression.

(b)

Expert Solution
Check Mark
To determine

To Find: The sample for the study.

Answer to Problem 1P

The sample is thirty adolescent boys who are taking medication for depression.

Explanation of Solution

Given info:

A researcher is investigates a group of 30 boys and half receive the new treatment in addition to their medication and the other half continue to take their medication without any treatment.

Justification:

Sample:

A sample is a set of individuals selected from a population, usually intended to represent the population in a research study.

The study states that the researcher randomly selects the group of thirty boys. Out of those thirty boys, half of them receive the new treatment in addition to their medication and the other half of them continue to take their medication without any treatment.

Hence, the sample is thirty adolescent boys who are taking medication for depression.

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Chapter 1 Solutions

Essentials of Statistics for the Behavioral Sciences

Ch. 1.4 - A researcher studies the factors that determine...Ch. 1.4 - a. When measuring height to the nearest inch, what...Ch. 1.5 - Calculate each value requested for the following...Ch. 1.5 - Prob. 2LCCh. 1.5 - Use summation notation to express each of the...Ch. 1 - A researcher is investigating the effectiveness of...Ch. 1 - Define the terms population, sample, parameter,...Ch. 1 - Statistical methods arc classified into two major...Ch. 1 - Define the concept of sampling error and explain...Ch. 1 - Describe the data for a correlation research study...Ch. 1 - What is the goal for an experimental research...Ch. 1 - Knight and Haslam (2010) found that office workers...Ch. 1 - Judge and Cable (2010) found that thin women had...Ch. 1 - Two researchers are both interested in determining...Ch. 1 - Weinstein, McDermott, and Roediger (2010)...Ch. 1 - A research study reports that alcohol consumption...Ch. 1 - Oxytocin is a naturally occurring brain chemical...Ch. 1 - For each of the following, determine whether the...Ch. 1 - Four scales of measurement were introduced in this...Ch. 1 - In an experiment examining the effects Tai Chi on...Ch. 1 - Explain why shyness is a hypothetical construct...Ch. 1 - Ford and Torok (2008) found that motivational...Ch. 1 - For the following scores, find the value of each...Ch. 1 - For the following set of scores, find the value of...Ch. 1 - For the following set of scores, find the value of...Ch. 1 - Two scores, X and Y, are recorded for each of n =...Ch. 1 - Use summation notation to express each of the...Ch. 1 - Prob. 23P
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