Math

StatisticsEssentials of Statistics for the Behavioral SciencesA random sample of n = 16 scores is obtained from a population with a mean of μ = 45. After a treatment is administered to the individuals in the sample, the sample mean is found to be M = 49.2. a. Assuming that the sample standard deviation is s = 8. compute r 2 and the estimated Cohen's d to measure the sue of the treatment effect. b. Assuming that the sample standard deviation is s = 20, compute r 2 and the r 2 estimated Cohen's d to measure the size of the treatment effect. c. Comparing your answers from parts a and b, how does the variability of the scores in the sample influence the measures of effect size?BuyFind*arrow_forward*

8th Edition

Frederick J Gravetter + 1 other

Publisher: Cengage Learning

ISBN: 9781133956570

Chapter 9, Problem 18P

Textbook Problem

A random sample of n = 16 scores is obtained from a population with a mean of
*M* = 49.2.

a. Assuming that the sample standard deviation is *s* = 8. compute *r*^{2} and the estimated Cohen's *d* to measure the sue of the treatment effect.

b. Assuming that the sample standard deviation is *s* = 20, compute *r*^{2} and the *r*^{2} estimated Cohen's *d* to measure the size of the treatment effect.

c. Comparing your answers from parts a and b, how does the variability of the scores in the sample influence the measures of effect size?

Essentials of Statistics for the Behavioral Sciences

Show all chapter solutions

Ch. 9.1 - Under what circumstances is a t statistic used...Ch. 9.1 - A sample of n = 9 scores has SS = 288. a. Compute...Ch. 9.1 - In general, a distribution of t statistics is...Ch. 9.1 - A researcher reports a t statistic with df = 20....Ch. 9.1 - For df = 15, find the value(s) of t associated...Ch. 9.2 - A sample of n = 4 individuals is selected from a...Ch. 9.3 - If all other factors are held constant, an 80%...Ch. 9.3 - If all other factors are held constant, a...Ch. 9.3 - A sample of n = 16 individuals is selected from a...Ch. 9.3 - How does sample size influence the outcome of a...

Ch. 9.4 - A new over-the-counter cold medication includes a...Ch. 9 - Under what circumstances is a t statistic used...Ch. 9 - A sample of n = 25 scores has a mean of M = 83 and...Ch. 9 - Find the estimated standard error for the sample...Ch. 9 - Explain why t distributions tend to be flatter and...Ch. 9 - Find the t values that form the boundaries of the...Ch. 9 - The following sample of n = 6 scores was obtained...Ch. 9 - The following sample was obtained from a...Ch. 9 - A random rumple of n = 25 individuals is selected...Ch. 9 - To evaluate the effect of a treatment, a sample is...Ch. 9 - To evaluate the effect of a treatment, a sample of...Ch. 9 - The spotlight effect refers to overestimating the...Ch. 9 - Many animals, including humans, tend to avoid...Ch. 9 - Standardized measures seem to indicate that the...Ch. 9 - The librarian at the local elementary school...Ch. 9 - For several years researchers have noticed that...Ch. 9 - Weinstein, McDermott, and Roediger (2010) report...Ch. 9 - Ackerman and Goldsmith (2011) found that students...Ch. 9 - A random sample of n = 16 scores is obtained from...Ch. 9 - A random sample is obtained from a population with...Ch. 9 - An example of the vertical-horizontal illusion is...Ch. 9 - McGee and Shevlin (2009) demonstrated that an...Ch. 9 - Oishi and Shigehiro (2010) report that people who...Ch. 9 - Research examining the effects of pie school child...

Find more solutions based on key concepts

Show solutions 1. Interpretation Consider graph (a) of Reasons People Like Texting on Cell Phones, based on a GfK Roper survey...

Understanding Basic Statistics

McAllister et al. (2012) compared varsity football and hockey players with varsity athletes from noncontact spo...

Statistics for The Behavioral Sciences (MindTap Course List)

The article Snow Cover and Temperature Relationships in North America and Eurasia (J. Climate and Applied Meteo...

Probability and Statistics for Engineering and the Sciences

A variety of information has been collected for all district high schools. Find the most appropriate measure of...

Essentials Of Statistics

A group of quiz, scares, is shown in a histogram If the bars in the histogram gradually decrease in height from...

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

Explain what is meant by the statement limx2f(x)=3.

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

If H is a normal subgroup of the group G, prove that (aH)n=anH for every positive integer n.

Elements Of Modern Algebra

Fill in the blanks: To find the points of intersection of two lines, we solve the system of describing the two ...

Finite Mathematics for the Managerial, Life, and Social Sciences

Let k be a fixed positive integer. The n th derivative of 1xk1 has the form Pn(x)(xk1)n+1 where Pn(x) is a poly...

Calculus: Early Transcendental Functions

Evaluate expressions in Exercises 3756, rounding your answer to four significant digits where necessary. 4

Finite Mathematics

In Exercises 13 to 16, provide the missing reasons. Given: DETandABCD Prove: ABECTB PROOF Statements Reasons 1....

Elementary Geometry For College Students, 7e

Simplify the algebraic expressions in Problems 1-14 by com- bining similar terms. Objective 1 15x4+6x9

Intermediate Algebra

Find the domain and range of the function. Write your answer in interval notation. 7. y = 1 + sin x

Single Variable Calculus

In Exercises 7-10, solve for x or y. 7+y2=3

Calculus: An Applied Approach (MindTap Course List)

Evaluate the integral. 5. tt4+2dt

Single Variable Calculus: Early Transcendentals

Xavier and Yolanda both have classes that end at noon and they agree to meet every day after class. They arrive...

Calculus (MindTap Course List)

Determine whether the statement is true or false. If it is true, explain why. If it is false, explain why or gi...

Single Variable Calculus: Early Transcendentals, Volume I

Finding a Differential In Exercises 21-32, Find the differential d y of the given function. y=xtanx

Calculus: Early Transcendental Functions (MindTap Course List)

In Exercises 23 and 24, determine which of the given lines better fits the given points. (1,1),(1,2),(2,0);y=x2...

Applied Calculus

A home equity ___________ of credit is a revolving credit second mortgage loan on the equity in a home. (14-6)

Contemporary Mathematics for Business & Consumers

Polar-to-Rectangular Conversion In Exercises 7378, convert the polar equation to rectangular form and sketch it...

Calculus of a Single Variable

In the following problems, use a normal approximation to the binomial.
31. Insurance Empirical records show tha...

Mathematical Applications for the Management, Life, and Social Sciences

Calculate each expression in Exercises 124, giving the answer as a whole number or a fraction in lowest terms. ...

Finite Mathematics and Applied Calculus (MindTap Course List)

Use the unit circle and the fact that cosine is an even function to find each of the following: sin(120)

Trigonometry (MindTap Course List)

Determinant Equations Solve for x. 66.|abx1xx+bx011|=0

Precalculus: Mathematics for Calculus (Standalone Book)

Find the local maximum and minimum values and saddle point(s) of the function. If you have three-dimensional gr...

Multivariable Calculus

A cow is tied to a silo with radius r by a rope just long enough to reach the opposite side of the silo. Find t...

Calculus: Early Transcendentals

A survey was completed by individuals who were currently on the Zone diet (Z). the South Beach diet (S), or the...

Mathematical Excursions (MindTap Course List)

Draw the graph of each equation: 2x3y=18

Elementary Technical Mathematics

A survey of high school students is described in the report Students on STEM (changetheequation.org/students-st...

Introduction To Statistics And Data Analysis

The first point determined by Euler’s method for , y(11) = 2 with step size 0.5 is:
(11.0, 3.5)
(11.5, 3.5)
(11...

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

Nine pegs are evenly spaced on a board so that the distance from each end to a peg equals the distance between ...

Elementary Geometry for College Students

π
does not exist

Study Guide for Stewart's Multivariable Calculus, 8th

The filling variance for boxes of cereal is designed to be .02 or less. A sample of 41 boxes of cereal shows a ...

STATISTICS F/BUSINESS+ECONOMICS-TEXT

Explain the circumstances in which an ABAB reversal design should be modified to create a more complex phase-ch...

Research Methods for the Behavioral Sciences (MindTap Course List)

Hudson Marine has been an authorized dealer for CD marine radios for the past seven years. The following table ...

Statistics for Business & Economics, Revised (MindTap Course List)

Explain how the process of randomly assigning participants to treatment conditions should prevent a participant...

Research Methods for the Behavioral Sciences (MindTap Course List)

Evaluating a Triple Iterated Integral Using Technology In Exercises 65 and 66, use a computer algebra system to...

Calculus (MindTap Course List)

Given the cutting speed and the tool or workpiece diameter, determine the revolutions per minute in the followi...

Mathematics For Machine Technology

Area In Exercises 41-44, use partial fractions to find the area of the given region. y=716x2

Calculus

Given that log20.3010and log30.4771, approximate each value. Do not use calculator. log24

College Algebra (MindTap Course List)

EXPLORING CONCEPTS Tangent Plane The tangent plane to the surface represented by F(x,y,z)=0 at a point P is als...

Multivariable Calculus

55. Does a high value of r2 imply that two variables are causally related? Explain.

Essentials Of Statistics For Business & Economics

42. A Gallup Poll showed that 30% of Americans are satisfied with the way things are going in the United States...

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

How many even integers are between 1 and 1,.001?

Discrete Mathematics With Applications

Round all answers to two decimal places. Linear or Exponential?In Exercises S-25 through S-28, a data set is gi...

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

CONCEPT QUESTIONS What is the New States Paradox? Explain its meaning.

Mathematics: A Practical Odyssey

In Problems 3740 proceed as in Example 6 to solve the given initial-value problem. Use a graphing utility to gr...

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

Suppose that about 85% of graduating students attend their graduation. A group of 22 graduating students is ran...

Introductory Statistics

Solving a Logarithmic Equation In Exercises 47-62, solve the logarithmic equation algebraically. Approximate th...

College Algebra