Emma's On-the-Go, a large convenience store that makes a good deal of money from magazine sales, has three possible locations in the store for its magazine rack: in the front of the store (to attract "impulse buying" by all customers), on the left-hand side of the store (to attract teenagers who are on that side of the store looking at the candy and soda), and in the back of the store (to attract the adults searching through the alcohol cases). The manager at Emma's experiments over the course of several months by rotating the magazine rack among the three locations, choosing a sample of 41 days at each location. Each day, the manager records the amount of money brought in from the sale of magazines. Below are the sample mean daily sales (in dollars) for each of the locations, as well as the sample variances: Sample Sample Sample size Group mean variance Front 41 218.0 365.0 Left-hand side 41 211.1 602.5 Right-hand side 41 211.1 415.3 Send data to calculator Send data to Excel Suppose that we were to perform a one-way, independent-samples ANOVA test to decide if there is a significant difference in the mean daily sales among the three locations. Answer the following, carrying your intermediate computations to at least three decimal places and rounding your responses to at least one decimal place. (a) What is the value of the mean square for error (the "within groups" mean square) that would be reported in the ANOVA |I test? (b) What is the value of the mean square for treatments (the "between groups" mean square) that would be reported in the|| ANOVA test?
Emma's On-the-Go, a large convenience store that makes a good deal of money from magazine sales, has three possible locations in the store for its magazine rack: in the front of the store (to attract "impulse buying" by all customers), on the left-hand side of the store (to attract teenagers who are on that side of the store looking at the candy and soda), and in the back of the store (to attract the adults searching through the alcohol cases). The manager at Emma's experiments over the course of several months by rotating the magazine rack among the three locations, choosing a sample of 41 days at each location. Each day, the manager records the amount of money brought in from the sale of magazines. Below are the sample mean daily sales (in dollars) for each of the locations, as well as the sample variances: Sample Sample Sample size Group mean variance Front 41 218.0 365.0 Left-hand side 41 211.1 602.5 Right-hand side 41 211.1 415.3 Send data to calculator Send data to Excel Suppose that we were to perform a one-way, independent-samples ANOVA test to decide if there is a significant difference in the mean daily sales among the three locations. Answer the following, carrying your intermediate computations to at least three decimal places and rounding your responses to at least one decimal place. (a) What is the value of the mean square for error (the "within groups" mean square) that would be reported in the ANOVA |I test? (b) What is the value of the mean square for treatments (the "between groups" mean square) that would be reported in the|| ANOVA test?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Emma's On-the-Go, a large convenience store that makes a good deal of money from magazine sales, has three possible locations in the store for its magazine
rack: in the front of the store (to attract "impulse buying" by all customers), on the left-hand side of the store (to attract teenagers who are on that side of the
store looking at the candy and soda), and in the back of the store (to attract the adults searching through the alcohol cases). The manager at Emma's
experiments over the course of several months by rotating the magazine rack among the three locations, choosing a sample of 41 days at each location. Each
day, the manager records the amount of money brought in from the sale of magazines.
Below are the sample mean daily sales (in dollars) for each of the locations, as well as the sample variances:
Sample Sample Sample
size
Group
mean
variance
Front
41
218.0
365.0
Left-hand side
41
211.1
602.5
Right-hand
side
41
211.1
415.3
Send data to calculator
Send data to Excel
Suppose that we were to perform a one-way, independent-samples ANOVA test to decide if there is a significant difference in the mean daily sales among the
three locations.
Answer the following, carrying your intermediate computations to at least three decimal places and rounding your responses to at least one decimal place.
(a) What is the value of the mean square for error (the "within
groups" mean square) that would be reported in the ANOVA II
test?
(b) What is the value of the mean square for treatments (the
"between groups" mean square) that would be reported in the | |
ANOVA test?
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