menu
bartleby
search
close search
Hit Return to see all results
close solutoin list

The following results are for independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 20 n 2 = 30 x ¯ 1 = 2 2.5 x ¯ 2 = 2 0. 1 s 1 = 2.5 s 2 = 4.8 a. What is the point estimate of the difference between the two population means? b. What is the degrees of freedom for the t distribution? c. At 95% confidence, what is the margin of error? d. What is the 95% confidence interval for the difference between the two population means?

BuyFindarrow_forward

STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884

Solutions

Chapter
Section
BuyFindarrow_forward

STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884
Chapter 10.2, Problem 9E
Textbook Problem
69 views

The following results are for independent random samples taken from two populations.

Sample 1 Sample 2
n1 = 20 n2 = 30
x ¯ 1 = 2 2.5 x ¯ 2 = 2 0. 1
s1 = 2.5 s2 = 4.8
  1. a. What is the point estimate of the difference between the two population means?
  2. b. What is the degrees of freedom for the t distribution?
  3. c. At 95% confidence, what is the margin of error?
  4. d. What is the 95% confidence interval for the difference between the two population means?

a.

To determine

Find the point estimate of the difference between the two population means.

Explanation of Solution

Calculation:

The results of two independent random samples drawn from two populations are as follows:

Sample 1Sample 2
n1=20n2=30
x¯1=22.5x¯2=20.1
s1=2.5s2=4

b.

To determine

Find the degrees of freedom for the t distribution.

c.

To determine

Find the margin of error at 95% confidence.

d.

To determine

Find the 95% confidence interval for the difference between the two population means.

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

Chapter 10 Solutions

STATISTICS F/BUSINESS+ECONOMICS-TEXT
Show all chapter solutions
add
Ch. 10.2 - Consider the following data for two independent...Ch. 10.2 - The U.S. Department of Transportation provides the...Ch. 10.2 - The average annual cost (including tuition, room,...Ch. 10.2 - Are nursing salaries in Tampa, Florida, lower than...Ch. 10.2 - Commercial real estate prices and rental rates...Ch. 10.2 - The College Board provided comparisons of...Ch. 10.2 - Periodically, Merrill Lynch customers are asked to...Ch. 10.2 - Researchers at Purdue University and Wichita State...Ch. 10.3 - Consider the following hypothesis test. H0:d0Ha:d0...Ch. 10.3 - The following data are from matched samples taken...Ch. 10.3 - A market research firm used a sample of...Ch. 10.3 - The price per share of stock for a sample of 25...Ch. 10.3 - Bank of Americas Consumer Spending Survey...Ch. 10.3 - The Global Business Travel Association reported...Ch. 10.3 - The College Board SAT college entrance exam...Ch. 10.3 - Scores in the first and fourth (final) rounds for...Ch. 10.3 - A manufacturer produces both a deluxe and a...Ch. 10.4 - Consider the following results for independent...Ch. 10.4 - Consider the hypothesis test H0:p1p20Ha:p1p20 The...Ch. 10.4 - A Businessweek/Harris survey asked senior...Ch. 10.4 - Forbes reports that women trust recommendations...Ch. 10.4 - Researchers with Oceana, a group dedicated to...Ch. 10.4 - Minnesota had the highest turnout rate of any...Ch. 10.4 - Oil wells are expensive to drill, and dry wells...Ch. 10.4 - The Adecco Workplace Insights Survey sampled men...Ch. 10.4 - Winter visitors are extremely important to the...Ch. 10.4 - The Adecco Workplace Insights Survey sampled men...Ch. 10 - Safegate Foods, Inc., is redesigning the checkout...Ch. 10 - Home values tend to increase over time under...Ch. 10 - Mutual funds are classified as load or no-load...Ch. 10 - The National Association of Home Builders provided...Ch. 10 - In Born TogetherReared Apart: The Landmark...Ch. 10 - Country Financial, a financial services company,...Ch. 10 - A large automobile insurance company selected...Ch. 10 - Medical tests were conducted to learn about...Ch. 10 - Vacation occupancy rates were expected to be up...Ch. 10 - Winter visitors are extremely important to the...Ch. 10 - One of the researchers voiced concern about the...

Additional Math Textbook Solutions

Find more solutions based on key concepts
Show solutions add
What does the invisible hand of the marketplace do?

Brief Principles of Macroeconomics (MindTap Course List)

What is the confirmation process?

Accounting Information Systems

A bond that pays interest forever and has no maturity is a perpetual bond. In what respect is a perpetual bond ...

Fundamentals of Financial Management, Concise Edition (with Thomson ONE - Business School Edition, 1 term (6 months) Printed Access Card) (MindTap Course List)

Find each or the followin.tt values for the distribution shown in the following polygon. a. n b. X c. X2

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

True or False: In the definition of , the expression is interpreted as “the distance between f(x) and L is les...

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

1. Can any value of x give a negative value for y if

Mathematical Applications for the Management, Life, and Social Sciences

In Exercises 75-98, perform the indicated operations and/or simplify each expression. 87. (a + 5)2

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

Find DF if: a DE=12 and EF=5 b DF=12 and EF=6. Exercises 7-10

Elementary Geometry For College Students, 7e

0 1 π It does not exist.

Study Guide for Stewart's Multivariable Calculus, 8th

Reminder Round all answers to two decimal places unless otherwise indicated. 5. Function Value from Slope and R...

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

Find an equation of the ellipse. Then find its foci. 18.

Single Variable Calculus: Early Transcendentals

26. Information about mutual funds provided by Morningstar includes the type of mutual fund (Domestic Equity, I...

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

In Problems 39–42 use the result in Problem 38 to evaluate the given integral. 42.

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