Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

The district manager of Jasons, large discount electronics chain, is investigating why certain stores in her region are executing better than others. She believes that three factors are related to total sales: the number of competitors in region, the population in surrounding area, and the amount spent on advertising. From her district, consisting of many hundred stores, she selects a random sample of 30 stores. For each store she gathered the following information.

Y =

total sales last year (in $ thousands).

X1 =

number of competitors in the region.

X2 =

population of the region (in millions).

X3 =

advertising expense (in $ thousands).

The sample data were run on MINITAB, with following results.

Analysis of variance

SOURCE

DF

SS

MS

Regression

3

3050.00

1016.67

Error

26

2200.00

84.62

Total

29

5250.00

Â

Predictor

Coef

StDev

t-ratio

Constant

14.00

7.00

2.00

X 1

-1.00

0.70

-1.43

X 2

30.00

5.20

5.77

X 3

0.20

0.08

 

a) Conduct global test of hypothesis to determine whether any of regression coefficients aren't equal to zero. Use the .05 level of significance.

b) Conduct tests of hypotheses to find out which of independent variables have significant regression coefficients. Which variables would you consider eliminating? Employ the .05 significance level.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M916759

Have any Question? 


Related Questions in Statistics and Probability

Data were collected from three populations using a

Data were collected from three populations using a completely randomized design. The following describes the sample data: n1 = n2 = n3 =6 R1 = 55 R2 = 64 R3 = 78 Conducting a test of hypothesis to verify whether there is ...

1 what aspects of data analysis can be performed by

1. What aspects of data analysis can be performed by computers, and what are the advantages of using them to do so? 2. Review the procedures used to verify that collected data are coded and entered correctly before they ...

1 how many conditions are there in the simplest possible

1. How many conditions are there in the simplest possible experiment? 2. Describe how participants are assigned to conditions in randomized groups, matched-subjects, and repeated measures experimental designs. 3. What ar ...

1 why must researchers ensure that their experimental

1. Why must researchers ensure that their experimental groups are roughly equivalent before manipulating the independent variable? 2. Discuss the relative advantages and disadvantages between within-subjects designs and ...

1 a successive independent survey design and a longitudinal

1. A successive independent survey design and a longitudinal survey design both examine changes in responses over time. How do they differ in their approach? 2. Distinguish between demographic and epidemiological researc ...

Suppose that a certain college class contains 42 students

Suppose that a certain college class contains 42 students. Of these, 23 are freshmen, 28 are history majors, and 8 are neither. A student is selected at random from the class. (a) What is the probability that the student ...

A prospective purchaser wishes to estimate the mean dollar

A prospective purchaser wishes to estimate the mean dollar amount of sales per customer at a toy store located in an airport terminal. Based on data from other similar airports, the standard deviation of such sales is ab ...

The borda and condorcet methods- the following example was

The Borda and Condorcet Methods :- The following example was presented by Condorcet, in a critique of the Borda Method. A committee composed of 81 members is to choose a winner from among three candidates, A, B, and C. T ...

A family is relocating from st louis missouri to california

A family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer than before to sell a house. The wife is concerned and wants to know when it is o ...

Microsoft word - stat Microsoft Word - STAT Assignment 1.

Microsoft Word - STAT Assignment 1. Anationalrepresentativesurveyofstudentsingrades7-12askedaboutthe experience of these students with respect to sexual harassment. The students were asked whether or not they were harass ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro