User Account

All Pages

homework, Basic Statistics

Assignment Help:
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.

Related Discussions:- homework

Evaluate the strategic value of the proposed organisation, 1) Working in yo...

1) Working in your groups analyse the organisation of information that the Facebook social networking site potentially uses. 2) Suggest the organisation of information and data

T accounts, if my income for the rest of the month was 2,500 and i recieved...

if my income for the rest of the month was 2,500 and i recieved 1,200 in cash balance on account where would i put this

Radioactive Disintegration Laws, Soddy and Rutherford, from their experimen...

Soddy and Rutherford, from their experimental study regarding the radioactive disintegration formulated the following laws, known as laws of radioactive disintegration. 1. Radioac

Predictive Sales Report, A retail store has recently hired you as a consult...

A retail store has recently hired you as a consultant to advise on economic conditions. One important indicator that the retail store is concerned about is the unemployment rate.

Normal distribution probabllity, The annual precipitation amounts in a cert...

The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 89 inches, and a standard deviation of 16 inches. What is the probability that

Customer behaviour, customer behaviour in accounting felid of study

customer behaviour in accounting felid of study

Himself, how r yopu

how r yopu

#measures of central tendency, #what is the importance of measures of centr...

#what is the importance of measures of central tendency to Human resource management

Central tendency, List down various measures of central tendency and explai...

List down various measures of central tendency and explain the difference between them?

Life tables, For public health purposes, the force of mortality in a popula...

For public health purposes, the force of mortality in a population is usually measured by means of such indices as crude death rate. Infant mortality rate, specific death rate at d

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd