3. A retail company is interested in examining whether the time taken for it to obtain approval for a credit card number by phone varies from one day of the week to another. The manager collects the following results. On Mondays, a sample of nį = 20 cases had a sample average of x1. = 20.44 seconds with a sample standard deviation of s1 =1.338 seconds. On Wednesdays, a sample of n2= 15 cases had a sample average of x2. = 16.33 seconds with a sample standard deviation of s2 = 1.267 seconds, and on Fridays, a sample of n3 seconds with a sample standard deviation of S3 = 1.209 seconds. a) Set up the Ho and Ha hypothesis b) Find out the F statistic c) Decide the p-value is above 0.05, between 0.01 and 0.05, or below 0.01. d) At the significant level of 0.01, what should the manager conclude? = 18 cases had a sample average of x3.= 15.34
3. A retail company is interested in examining whether the time taken for it to obtain approval for a credit card number by phone varies from one day of the week to another. The manager collects the following results. On Mondays, a sample of nį = 20 cases had a sample average of x1. = 20.44 seconds with a sample standard deviation of s1 =1.338 seconds. On Wednesdays, a sample of n2= 15 cases had a sample average of x2. = 16.33 seconds with a sample standard deviation of s2 = 1.267 seconds, and on Fridays, a sample of n3 seconds with a sample standard deviation of S3 = 1.209 seconds. a) Set up the Ho and Ha hypothesis b) Find out the F statistic c) Decide the p-value is above 0.05, between 0.01 and 0.05, or below 0.01. d) At the significant level of 0.01, what should the manager conclude? = 18 cases had a sample average of x3.= 15.34
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question

Transcribed Image Text:3. A retail company is interested in examining whether the time taken for it to obtain approval for
a credit card number by phone varies from one day of the week to another. The manager collects
the following results. On Mondays, a sample of ni = 20 cases had a sample average of x1. = 20.44
seconds with a sample standard deviation of s1 = 1.338 seconds. On Wednesdays, a sample of n2=
15 cases had a sample average of x2. = 16.33 seconds with a sample standard deviation of s2
1.267 seconds, and on Fridays, a sample of n3
seconds with a sample standard deviation of s3 = 1.209 seconds.
a) Set up the Ho and Ha hypothesis
b) Find out the F statistic
c) Decide the p-value is above 0.05, between 0.01 and 0.05, or below 0.01.
d) At the significant level of 0.01, what should the manager conclude?
18 cases had a sample average of x3.= 15.34
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 14 images

Knowledge Booster
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
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman