close solutoin list

Two researchers are both interested in determining whether large doses of vitamin C can help prevent the common cold. Each obtains a sample of n = 20 college students. a. The first researcher interviews each student to determine whether they routinely take a vitamin C supplement. The researcher then records the number of colds each individual gets during the winter. Is this an experimental or a nonexperimental study? Explain your answer. b. The second researcher separates the students into two roughly equivalent groups. The students in one group are given a daily multivitamin containing a large amount of vitamin C, and the other group gets a multivitamin with no vitamin C. The researcher then records the number of colds each individual gets during the winter. Is this an experimental or a nonexperimental study? Explain your answer.

BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570
BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570

Solutions

Chapter
Section
Chapter 1, Problem 9P
Textbook Problem

Two researchers are both interested in determining whether large doses of vitamin C can help prevent the common cold. Each obtains a sample of n = 20 college students.

  1. a. The first researcher interviews each student to determine whether they routinely take a vitamin C supplement. The researcher then records the number of colds each individual gets during the winter. Is this an experimental or a nonexperimental study? Explain your answer.
  2. b. The second researcher separates the students into two roughly equivalent groups. The students in one group are given a daily multivitamin containing a large amount of vitamin C, and the other group gets a multivitamin with no vitamin C. The researcher then records the number of colds each individual gets during the winter. Is this an experimental or a nonexperimental study? Explain your answer.

Expert Solution

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

See Solution

*Response times vary by subject and question complexity. Median response time is 34 minutes and may be longer for new subjects.

Chapter 1 Solutions

Essentials of Statistics for the Behavioral Sciences
Show all chapter solutions
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 - Identify the first step in each of the following...Ch. 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 - For the set of scores at the right, find the value...

Additional Math Textbook Solutions

Find more solutions based on key concepts
Show solutions
Compute C5,2.

Understanding Basic Statistics

What is the lowest score in the following distribution?

Essentials of Statistics for The Behavioral Sciences (MindTap Course List)

In Exercises 516, evaluate the given quantity. log416

Finite Mathematics and Applied Calculus (MindTap Course List)

Round the following numbers to the indicated place. .44857 to hundredths

Contemporary Mathematics for Business & Consumers

In Exercises 1-8, find the indicated limit by first plotting the graph of the function in a suitable viewing wi...

Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach

Find 56.1% of 360.

Elementary Technical Mathematics

True or False: converges.

Study Guide for Stewart's Multivariable Calculus, 8th

For f(x) = cos1(2x), f(x) = a) 114x2 b) 214x2 c) 414x2 d) 814x2

Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th

What elements are required for a single-case research study to qualify as an experiment?

Research Methods for the Behavioral Sciences (MindTap Course List)

Under what circumstances is a stratified random sample preferred to a simple random sample?

Research Methods for the Behavioral Sciences (MindTap Course List)

In alphabetical order, the six most common last names in the United States are Brown, Johnson, Jones, Miller,...

Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)

Reminder Round all the answers to two decimal places unless otherwise indicated. Linear and Quadratic Data One ...

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

Construct a mathematical model for a radioactive series of four elements W, X, Y, and Z, where Z is a stable el...

A First Course in Differential Equations with Modeling Applications (MindTap Course List)