Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Hypothesis testig for paired sample t test.

A company wanted to know if attending a course on "how to be a successful salesperson" can increase average sales of its employees.  The company sent six of its salespersons to attend this course.  The following table gives the one-week sales of these salespersons before and after they attended this course:

 

Before

12

18

25

9

14

16

After

18

24

24

14

19

20

Differences

 

 

 

 

 

 

 

First find out the 6 differences (Before course sales - After course sales)  

Before

12

18

25

9

14

16

After

18

24

24

14

19

20

Differences

-6

-6

1

-5

-5

-4

 

Where,

Differences = before course sales - After course sales

1. Find out the mean of the 6 differences

2. Find out the standard deviation of the differences

3. To find out whether the course is effective in increasing sale, the appropriate set of hypothesis for testing is (Be careful which one you choose!)

4. The appropriate test to use is

a. T-test           b. 1-PropZtest             c. ZTest            d. Chi-square test

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920203

Have any Question? 


Related Questions in Statistics and Probability

1 list as many sources of archival data as you can2 what

1. List as many sources of archival data as you can. 2. What four kinds of research questions are particularly suited for the use of archival data? 3. Describe how you would conduct a content analysis.

The setup is again as in exercise 931 but this time peter

The setup is again as in Exercise 9.31, but this time Peter chooses the integer k randomly according to a geometric distribution with parameter 1/2, that is, P(k = n) = 1/2n for each n ∈ N. How does this affect your answ ...

A reasearcher studying correctional treatment on 192 sex

A reasearcher studying correctional treatment on 192 sex offenders composed of 10 females and 182 males finds that 11 males along with 1 female had reoffended. He then calculated the percentages and find that 10% of fema ...

A committee comprised of 15 members is called upon to rank

A committee comprised of 15 members is called upon to rank three colors: red, blue, and yellow, from most preferred to least preferred. The committee members simultaneously announce their strict preference relations over ...

Read full english transcript of osama bin ladens speechwhat

Read: full English transcript of Osama bin Laden's speech What are some examples of bin Laden's complaints against Western society? What seems to be his plan for the Islamic world?

A company manufactuirng compter chip finds that 8 of all

A company manufactuirng compter chip finds that 8% of all chips manufactured are defective. Management is concerned that high employee turnover is partially responsible for the high defect rate. In an effort to decrease ...

Name two or three competitors that compete most directly

Name two or three competitors that compete most directly for the same resources and customers that you need to perform well as an organization (or other government agencies or non-profits that compete for similar donors ...

A social psychologist is interested in whether the type of

A social psychologist is interested in whether the type of music a college student is listening to will have any effect on the number of beers the student drinks. Fifteen college students were randomly assigned to one of ...

1 all successful empires share certain characteristics what

1. All successful empires share certain characteristics. What are these characteristics and how do they relate to the rise of the Muslim empires? Put Islam in its historical context and explain how the Umayyad and Abbasi ...

Hello kitty company claims that the proportion of its

Hello Kitty Company claims that the proportion of its employees investing in individual investment accounts is higher than national proportion of 50%. A survey of 100 employees in Hello Kitty Company indicated that 58 of ...

  • 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