Login

Create Account
+14156709189
info@expertsmind.com
Submit Homework/Assignment
Get quote & make Payment
Get Solution
homework, Basic Statistics
Problems
15. An art professor was interested in seeing what size group is best to prime the pump so to speak to encourage strangers to gather together in front of various exhibits at her art show, so she set up an experiment. In a municipal building off campus, she asked a group of two students to stand next to each other and stare intently at a wall decoration while simultaneously she asked a group of five students to do the same at the other end of the floor. For the next 30 minutes she observed passersby to see if they too looked at the decorations for more than five seconds or made comments about the artwork to members of either group.
Here is what she found: She observed 9 people make comments or look at the decorations for more than five seconds with respect to group of two (G2). Down the hallway, she observed 26 people look at the decorations or make comments to the group of five (G5). However, she found that 34 people just passed by G5 without noticing the decoration or making a comment. A smaller number (31) just walked past G2. Because G5 had more passers than participants, she concluded that placing two of her students in front of art displays would encourage strangers to do the same. Was this a good decision? Please support your answer with an appropriate test.
16. A professor is interested in knowing the correlation, if any, of students’ scores on the first exams given in her two classes.
Class 1 Class 2
92 86
90 87
89 85
82 90
88 79
92 90
100 92
91 84
Is there a significant correlation? Explain its statistical significance, if any.
17. With respect to the situation in question 16, what other test could the professor use that would yield valid results by looking for differences. What would be the statistical result of the test?
19. A professor was interested in determining if his students made significant improvements in their test scores?
Student Test 1 Test 2
Beth 86 92
Spud 87 90
Latinqua 85 89
Bubba 90 82
Spanky 79 88
Tabitha 90 92
Lisa 92 100
Jonathan 84 91
20. A professor teaches two different subjects (history and sociology) in an ethnically diverse college. She wants to know how much interest students have in prominent political figures. She reasons that knowing this will help her plan for future lectures.
She asked students to rate each person listed with a Lickert scale (a continuum with five being high and 1 being of low interest). Upon looking at the data results, she concluded that there is no need to emphasize any political figure more than the others. Indeed, she reckoned, students in each subject area rated the figures similarly, so she can pace her lessons just as she has in the past.
History students’ scores:
John Maynard Keynes 3.6
Jesus 4.1
Martin Luther King Jr. 4.0
Karl Marx 2.5
Patricia Ireland 2.6
Abraham Lincoln 4.5
Sociology students’ scores:
John Maynard Keynes 3.7
Jesus 4.2
Martin Luther King Jr. 3.9
Karl Marx 4.1
Patricia Ireland 4.0
Abraham Lincoln 3.8
Is her conclusion solid? Please provide a statistical assessment using an appropriate test to evaluate her decision.
Posted Date: 2/15/2013 2:32:59 PM  Location : United States
Ask an Expert
Related Discussions:
homework, Assignment Help, Ask Question on homework, Get Answer, Expert's Help, homework Discussions
Write discussion on homework
Your posts are moderated
Write your message here..
Related Questions
Cost accounting, Classification of cost accounting?
Classification of cost accounting?
Linear power supply, Linear Power Supply Uses a transformer to convert volt...
Linear Power Supply Uses a transformer to convert voltage from the mains (wall outlet) to a different voltage. With a transformer present, almost any voltage can be obtained. If a
Diagrammatic and graphic, #question.d.
#question.d.
Cost accounting, Problems and solutions in marginal costing
Problems and solutions in marginal costing
A m, what is the relationship between the variance and the standard deviati...
what is the relationship between the variance and the standard deviation?
Indepth analysis of the effects of the salary, Background: There was no 2...
Background: There was no 200405 National Hockey Leagues (NHL) season because of a labour dispute between the players and the teams. One of the outcomes of the labour dispute was
Four characteristics and functions of statistics, highlight four characteri...
highlight four characteristics and four functions of statistics
#title.What are the important principles that have to be ob., What are the ...
What are the important principles that have to be observed in the maintenance of discipline
Karl Pearsons, ). Calculate Karl Pearson’s coefficient of correlation from...
). Calculate Karl Pearson’s coefficient of correlation from the following data , using 20 as the working mean for price and 70 as the working mean for demand: Price: 14 16 17 18 1
develop simulation modelcompute average amount, Bob Smith recently comple...
Bob Smith recently completed his MBA and accepted a job with a computer company. To ensure that his retirement is comfortable, he intends to invest $3,000 of his salary into a tax
Assignment Help
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
IT Courses and Help
ExpertsMind Services
Online Tutoring
Projects Assistance
Exam Preparation
Coursework Help
Programming Courses
Engineering Courses
Why Us ?
~Experienced Tutors
~24x7 hrs Support
~Plagiarism Free
~Quality of Work
~Time on Delivery
~Privacy of Work