Math

StatisticsEssentials of Statistics for the Behavioral SciencesResearch examining the effects of pie school child care has found that children who spent time in day care, especially high-quality day care, perform helter on math and language tests than children who stay home with their mothers (Broberg, Wessels, Lamb, & Hwang, 1997). In a typical study, a researcher obtains a sample of n = 10 children who attended day care before starting school. The children are given a standardized math test for which the population mean is μ = 50. The scores for the sample are as follows; 53, 57, 61, 49, 51, 56, 58, 62, 51, 56. a. Is this sample sufficient to conclude that the children with a history of preschool day care are significantly different from the general population? Use a two-tailed test with α = .01. b. Compute Cohen's d to measure the size of the preschool effect. c. Write a sentence showing how the outcome of the hypothesis lest and the measure of effect size would appear in a research report.BuyFind*arrow_forward*

8th Edition

Frederick J Gravetter + 1 other

Publisher: Cengage Learning

ISBN: 9781133956570

Chapter 9, Problem 23P

Textbook Problem

Research examining the effects of pie school child care has found that children who spent time in day care, especially high-quality day care, perform helter on math and language tests than children who stay home with their mothers (Broberg, Wessels, Lamb, & Hwang, 1997). In a typical study, a researcher obtains a sample of *n* = 10 children who attended day care before starting school. The children are given a standardized math test for which the population mean is

a. Is this sample sufficient to conclude that the children with a history of preschool day care are significantly different from the general population? Use a two-tailed test with

b. Compute Cohen's *d* to measure the size of the preschool effect.

c. Write a sentence showing how the outcome of the hypothesis lest and the measure of effect size would appear in a research report.

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 Binomial Distribution Table: Symmetry Study the binomial distribution table (Table 2 of the Appendix). Notice t...

Understanding Basic Statistics

For each of the following research situations, identify the level of measurement of all variables. Also, decide...

Essentials Of Statistics

Use summation notation lo express each of the following calculations a. Add the scores and then square the sum....

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

A computer disk storage device has ten concentric tracks, numbered 1, 2,..., 10 from outermost to innermost, an...

Probability and Statistics for Engineering and the Sciences

If the alpha level is changed from =.05 to =.01 What happens to the boundaries for the critical region? What ha...

Statistics for The Behavioral Sciences (MindTap Course List)

Each of the following problems refers to triangle ABC. If a=38cm,b=10cm,c=31cm, find the largest angle.

Trigonometry (MindTap Course List)

In Exercises 85-88, determine whether the statement is true or false. If it is true, explain why it is true. If...

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

Find a pair of numbers that provides a counterexample to show that the given statement is false. If the product...

Mathematical Excursions (MindTap Course List)

(a) Find the vertical asymptotes of the function y=x2+13x2x2 (b) Confirm your answer to part (a) by graphing th...

Single Variable Calculus: Early Transcendentals

For Problems 1-10, answer true or false. The value of x2y2 is 29 when x=5 and y=2.

Intermediate Algebra

Purchases OHaganBooks.com has been promoting a number of books published by Duffin House. The following table s...

Finite Mathematics

Use the binomial series to expand the function as a power series. State the radius of convergence. 33. 1(2+x)3

Multivariable Calculus

Complete Factorization Factor the polynomial completely, and find all its zeros. State the multiplicity of each...

Precalculus: Mathematics for Calculus (Standalone Book)

Evaluate the integral. 0/4sectand

Single Variable Calculus: Early Transcendentals, Volume I

Which of the following measures can an angle have? 23, 90, 200, 110.5, -15

Elementary Geometry For College Students, 7e

3540 Find the volume of the given solid. One of the wedges cut from the cylinder x2+9y2=a2 by the planes z=0 an...

Calculus (MindTap Course List)

Given that limxcsc2x=, illustrate Definition 6 by finding values of that correspond to (a) M = 500 and (b) M =...

Single Variable Calculus

Marginal Profit In Exercises 65 and 66, find the marginal profit for selling x units. (The profit is measured i...

Calculus: An Applied Approach (MindTap Course List)

Determine whether each integral is convergent or divergent. Evaluate those that are convergent. 23. 0zz4+4dz

Calculus: Early Transcendentals

Using the Second Derivative Test In Exercises 37-58, find all relative extrema of the function. Use the Second ...

Calculus: Early Transcendental Functions

11. Let be a subgroup of, let be a fixed element of , and let be the set of all elements of the form , where ...

Elements Of Modern Algebra

Comparing Coordinate Systems Describe the differences between the rectangular coordinate system and the polar c...

Calculus of a Single Variable

Productivity Suppose that in a study of leadership style versus industrial productivity, the following data wer...

Mathematical Applications for the Management, Life, and Social Sciences

Expand each expression in Exercises 122. x(3x+y)

Applied Calculus

Sketch the graphs of the equations in Exercises 512. yx=1

Finite Mathematics and Applied Calculus (MindTap Course List)

Change 1.5 kg to g.

Elementary Technical Mathematics

In Exercises 1-6, let S={a,b,c,d,e,f} be a sample space of an experiment, and let E={a,b}, F={a,d,f} and G={b,c...

Finite Mathematics for the Managerial, Life, and Social Sciences

Find the maturity value of the following loans. Use MV = p (1 + RT) to find the maturity values.
27.
Principal ...

Contemporary Mathematics for Business & Consumers

Think About It Repeat Exercise 65 for a region R bounded by the graph of the equation (x2)2+y2=4.

Calculus: Early Transcendental Functions (MindTap Course List)

Cost per serving (in cents) for six high-fiber cereals rated very good and for nine high-fiber cereals rated go...

Introduction To Statistics And Data Analysis

True or False:
converges conditionally.

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

In Exercises 16 and 17, complete the statements and reasons in each proof. Given: MN-||QR- Prove: MNP~QRP State...

Elementary Geometry for College Students

True or False:

Study Guide for Stewart's Multivariable Calculus, 8th

Describe the difference between inductive and deductive reasoning and give an example of each.

Research Methods for the Behavioral Sciences (MindTap Course List)

Define plagiarism and explain the techniques that can be used to help avoid unintentional plagiarism.

Research Methods for the Behavioral Sciences (MindTap Course List)

An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and unloading ...

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

The following data are product weights for the same items produced on two different production lines. Test for ...

STATISTICS F/BUSINESS+ECONOMICS-TEXT

Determine the functions of the following angles. Round the answers to 4 decimal places. sin 7.43

Mathematics For Machine Technology

Motion Along an Involute of a Circle The figure shows a particle moving along a path modeled by r(t)=cost+tsint...

Multivariable Calculus

Find the symmetries of each graph. y=x4+1

College Algebra (MindTap Course List)

Rolle's Theorem In your own words, describe Rolles Theorem.

Calculus (MindTap Course List)

Hotel Prices. Hotel room pricing changes over time (Lodging Magazine), but is there a difference between Europe...

Essentials Of Statistics For Business & Economics

The following data are for 30 observations involving two categorical variables, x and y. The categories for x a...

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

What does the phrase half-life mean?

Mathematics: A Practical Odyssey

In Problems 116 the indicated function y1(x) is a solution of the given differential equation. Use reduction of...

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

In 9-33, determine whether the given relation is reflexive, symmetric, transitive, or none of these. Justify yo...

Discrete Mathematics With Applications

For these exercises, round all estimates to one decimal place. Another Table The following is a partial table o...

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

f(x) , a continuous probability function, is equal to 112 , and the function is restricted to 0x12 . What Is P ...

Introductory Statistics

Solving a Polynomial Equation In Exercises 5-16, solve the equation. Check your solutions. x33x2x=3

College Algebra

Find the area under the graph of g(t)=t(1 t 2)a between t = 0 and t = x, where 0 < x < 1 and a > 0 is fixed. Ev...

Calculus Volume 2

wSolve the following logarithmic equations. 325. log2(x+4)=3

Calculus Volume 1