# LAC 120 USM Video Games and Violent Behavior Statistics Research Questions LOS 120 Assessment #2 There is questions about the research paper Video Games an

LAC 120 USM Video Games and Violent Behavior Statistics Research Questions LOS 120 Assessment #2 There is questions about the research paper Video Games and Violent Behavior.Please send ONE document either in Word. You can paste your

Excel charts in the Word document, but please send ONE WORD DOCUMENT. NO PDFS

OR GOODLE DOCS PLEASE! LAC 120

Statistics for Informed Decision Making

Assessment #2

Rubric: (READ CAREFULLY!)

4: Excellent: Full Accomplishment

Strategy and execution meet the content, processes, and qualitative

demands of the task. If it is a mathematical problem, all of the work is

shown in a neat and logical manner. Questions asking for an explanation

are judged by effectiveness, not length. This is where you get most of

the points. Just dont brush off the explanation with a sentence or two.

Really dig deep and tell the full story. I am assessing your ability to

analyze and evaluate your findings. It is very easy to make an Excel

chart, but I want to know what you have learned from delving into the

problem. The explanation and interpretation are accurate, clear, and

grammatically correct. Graphs have a title and the axes are clearly

labeled with appropriate units.

3: Proficient: Substantial Accomplishment

Work to full accomplishment but with minimal explanation. Errors are

minor, instructor is confident that understanding is adequate to

accomplish the objective.

2: Marginal: Partial Accomplishment

Part of the task is accomplished, but there is lack of understanding or

evidence of not understanding. The explanation is minimal and indicates

lack of understanding or laziness.

1: Unsatisfactory: Little Accomplishment

The task is attempted and some mathematical effort is made. There may

be fragments of accomplishment but little or no success.

0: Consider bribing the instructor with chocolate. 70% dark is the

minimum.

AGAIN, JUST TO REMIND YOU:

For full credit, you must a) Show all of your work in a clear and

orderly manner and explain each part of the problem. When you

are asked to discuss in detail you should respond with more than

one sentence. See rubric above for 4 points. Do not bore me! Each

section of the problem is worth up to 4 points. That means 10

questions sections for a total of 40 points.

Each Part represents the corresponding chapter in the book.

Chapter 8

There are 80 students enrolled in an introductory Statistics class; you are

to select a sample of 5. How can you select an SRS of 5 students using

these random digits found on the Internet?

05166

29305

77482

Chapter 9

We are planning an experiment to see whether the new pet food is safe

for dogs to eat. We will feed some animals the new food and others a

food known to be safe, comparing their health after a period of time.

In this experiment, how will you implement the principles of control,

randomization, and replication?

Chapter 10

Find a standard thumbtack and practice tossing it onto a flat surface.

Notice that there are two different outcomes: The tack can land point

down or point up. (If you do not have a thumbtack, improvise. Youre

smart!)

a) Toss the tack 50 times and record the outcomes. Record the results in

an Excel chart. Explain what you did.

b) Give the probabilities of the two possible outcomes based on these

results. Show your work. Explain.

c) Ask other people (at least one) to repeat the process. How well do

your probabilities agree? Discuss your findings.

Chapter 11

The scores of 12th-grade students on the National Assessment of

Educational Progress year 2000 mathematics test have a distribution that

is approximately Normal with mean ? = 300 and standard deviation ? =

35.

(a) Choose one 12th-grader at random. What is the probability that his or

her score is higher than 300? Higher than 335?

(b) Now choose an SRS of four 12th-graders and calculate their mean

score x. If you did this many times, what would be the mean and

standard deviation of all the x-values?

(c) What is the probability that the mean score for your SRS is higher

than 300? Higher than 335?

Chapter 14

Census Bureau data show that the mean household income in the area

served by a shopping mall is $72,500 per year. A market research firm

questions shoppers at the mall. The researchers suspect the mean

household income of mall shoppers is higher than that of the general

population. State ???? and ????. Explain completely.

Research Paper Question

Please state your topic AND your clearly worded hypothesis as well as

your progress on your research paper. How much work have you done

on the paper? Did you pass in an outline? Did you send at least one

draft? Remember, the more drafts you send the higher your grade. This

is a check-in question but it is still worth 4-points.

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