BuyFindarrow_forward

Essentials of Statistics for the B...

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

Solutions

Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

A sample of difference scores from a repeated-measures experiment has a mean of MD = 4 with a standard deviation of s = 6.

  1. a. If n = 4, is this sample sufficient to reject the null hypothesis using a two-tailed test with α = .05?
  2. b. Would you reject H0 if n = 16? Again, assume a two-tailed test with α = .05.
  3. c. Explain how the size of the sample influences the likelihood of finding a significant mean difference.

a.

To determine
Sample with n=4 is sufficient to reject the null hypothesis.

Explanation

Given info:

Numbers of participants in the sample are n=4. Mean difference is MD=4.

Sample standard deviation is s=6. Level of significance for two tailed test is α=0.05.

Calculation:

Null Hypothesis: Sample came from a population with μD=0.

Alternate Hypothesis: Sample came from a population with μD0

In repeated-measures study, t statistic under null hypothesis is given by:

t=MDμDsn=4064=1

b.

To determine
Sample with n=16 is sufficient to reject the null hypothesis.

c.

To determine

To Explain: How the size of the sample influences the likelihood of finding a significant mean difference.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Math Solutions

Find more solutions based on key concepts

Show solutions add

Solve the differential equation. 10. dzdt+et+z=0

Single Variable Calculus: Early Transcendentals

In Problems 1-22, solve each equation. Give answers correct to three decimal places in Problems 1-12. 14.

Mathematical Applications for the Management, Life, and Social Sciences

In Exercises 11-16, find the slope of the line that passes through each pair of points. 15. (a, b) and (c, d)

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

Graphing Polar Equations Sketch a graph of the polar equation. 38. r = 1 2 cos

Precalculus: Mathematics for Calculus (Standalone Book)

Find the critical numbers of the function. g() = 4 tan

Single Variable Calculus: Early Transcendentals, Volume I

What trigonometric substitution should be made for x2x225dx? a) x = 5 sin b) x = 5 tan c) x = 5 sec d) x = c...

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

The third partial sum of is:

Study Guide for Stewart's Multivariable Calculus, 8th