A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's . The research firm using a standardized one-week shopping plan (grocery lists, makes identical purchases at 50 of each chain's stores. The stores for each chain are randomly selected, and all purchases are made during a single week. It is reasonable to assume that the samples are independent. We are unwilling to assume that the population variances are equal. Weeky Expenses Publi's Average Weekly Expenses of the 50stores $120.96 Sample Variance $67.07 Wally's Average Weekly Expenses of the 50 stores $115.72 Sample Variance $68.31 What is the degrees of freedom for the t distribution - If needed round your intermediate calculations to no more than 4 decimal places. Round down your final answer to the closest integer

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's .
The research fırm using a standardized one-week shopping plan (grocery lists, makes identical purchases at 50 of
each chain's stores. The stores for each chain are randomly selected, and all purchases are made during a single
week. It is reasonable to assume that the samples are independent. We are unwilling to assume that the
population variances are equal.
Weeky Expenses
Publi's
Average Weekly Expenses of the 50stores
$120.96
Sample Variance
$67.07
Wally's
Average Weekly Expenses of the 50 stores
Sample Variance
$115.72
$68.31
What is the degrees of freedom for the t distribution -
If needed round your intermediate calculations to no more than 4 decimal places.
Round down your final answer to the closest integer
Transcribed Image Text:A marketing research firm whishes to compare the prices charged by 2 supermarket chains - Publi's and Wally's . The research fırm using a standardized one-week shopping plan (grocery lists, makes identical purchases at 50 of each chain's stores. The stores for each chain are randomly selected, and all purchases are made during a single week. It is reasonable to assume that the samples are independent. We are unwilling to assume that the population variances are equal. Weeky Expenses Publi's Average Weekly Expenses of the 50stores $120.96 Sample Variance $67.07 Wally's Average Weekly Expenses of the 50 stores Sample Variance $115.72 $68.31 What is the degrees of freedom for the t distribution - If needed round your intermediate calculations to no more than 4 decimal places. Round down your final answer to the closest integer
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Anova and Design of Experiments
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman