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

Business valuation to determine the stock price of an entity, Definition of...

Definition of business valuation to determine the stock price of an entity. Business valuation is the value or price where a unit would be purchased at a given point in time. Usual

Sampling errors, what are the types of sampling errors and their causes?

what are the types of sampling errors and their causes?

Absorption overheads, Give a brief discussion of the existing traditional ...

Give a brief discussion of the existing traditional method of absorbing overheads

Variability, the purpose of measures of variability

the purpose of measures of variability

Accounting rate of return, Ghosh Ltd is considering expanding its business ...

Ghosh Ltd is considering expanding its business and has to decide between taking on Project A or Project B. Both projects have a life of four years. Equipment is expected to have

Dil jaley, one two

one two

Salient features of a promissory note, What are the salient features of a P...

What are the salient features of a Promissory Note? Ans. a) A Promissory Note is made by the promiser who undertakes to pay the mentioned amount of Bill to the bearer of the Promi

Hcfp test the drainage system, After successfully having navigated the LPP ...

After successfully having navigated the LPP issue, HCFP has once again for your help.  Now, they are considering implementing a new drainage system to improve water flow across the

Index numbers, discuss the considerations to be born in mind when constract...

discuss the considerations to be born in mind when constracting index numbers

Index number, How to solve problems of index number fixed based method

How to solve problems of index number fixed based method

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