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

One sample from an independent-measures study has n = 9 with a variance of s2 = 35. The other sample has n = 3 and s2 = 40.

a. Compute the pooled variance. (Note: Equation 10.3 works well with these data.)

b. Compute the estimated standard error for the mean difference.

a.

To determine

To find: The pooled variance for the given question.

Explanation

Given info:

Two samples with size 9 and 3 have sample variances 35 and 40 respectively.

Calculations:

Pooled variance:

sp2=SS1+SS2df1+df2

SS1=s12(n11)=35(91)=35×8=280

SS2:

SS2=s22(n21)=40(31)

b.

To determine

To compute: The estimated standard error for the mean.

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

Convert the expressions in Exercises 6584 to power form. 35x2

Finite Mathematics and Applied Calculus (MindTap Course List)

Classify each number as prime or not prime: 51

Elementary Technical Mathematics

THE NARROWING Gender Gap Since the founding of the Equal Employment Opportunity Commission and the passage of e...

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

True or False: Predator-prey population models are the solutions to two differential equations.

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