1. Changing the Discussion Settings in LEO
The following instructions show how you should set up your
discussion settings in LEO.
1. You should click on discussions.
2. Then you want to click on settings.
3. The interface looks like this
4. The next step is to change some settings. Look at this next
picture.
5. Did you see what we just changed? Good!
6. Want to know the next step? Here it is!
7. I hope you see that two settings have now been changed.
Examine the pictures closely to see what has been changed. It’s
important.
8. Clicking save will save these settings.

2. 9. Now, click on any particular discussion, and you will see
how the changes change the interface. For example, you could
click on student introductions, as the screen capture below
indicates:
10. Take a look. Cool, eh?!?
11. And more cool features are shown in the next picture.
I hope this helps.
This course is concerned with the basic understanding of
probability and it's applications. The goal is to learn and you
get back what you put in. Briefly state the question and use the
Equation Editor to present all equations clearly. Answer any 2
questions.
For probability questions, define events as:
A: drawing a 10♣
B: drawing a 9♥
P(A&B) = P(A)P(B|A) = ??
Special Exercises (1to 5)
1. What is the probability of drawing at random the 4♥ and the
9♣ from a deck of cards on two successive draws? Use
Insert/Insert symbol to get the heart, club, diamond, spade

3. symbol by selecting the drop down menu to the left of
Paragraph. Also, click on the drop down menu next to the
Black Square icon in the menu of the Editor to change colors of
the characters.
2. 18 people were poled and 10 said they have shopped at Wal-
Mart and 8 said they have shopped at Target. 4 said they
shopped at both. What is the probability that the group shopped
at Wal-Mart or Target?.
3. Define independent and mutually exclusive events
mathematically by using P(A) & P(B) for events A & B.
4. What is the probability of randomly drawing a 10 or a ♦ from
a deck of cards?
5. What are the total possible outcomes of rolling a pair of dice?
Note that the pair 3,4 is not the same as the pair 4,3. What is the
probability of rolling a 7 with a pair of dice? P(7) = No. of
successful outcomes/Total No. of outcomes
In questions 1,2,4, begin by clearly defining events A & B as
shown below.
For example, A: 4♥ and B: 9♣. State P(A)=??, P(B)=?? and
then apply the appropriate equations , such as
P(A&B) = P(A)P(B|A) or P(AorB) = P(A)+P(B)-P(A&B)
Substitute values and compute the answer. I urge you to read
the attachments in the Videos-Topics In Stat 230/Probability
Rules.
I prefer to use P(A&B) or P(AorB) instead of P(A∩B) or
P(A∪ B). You will see the latter on the final so be sure you
know what the "∩" and "U" symbols mean.
COMPLEMENTARY EVENTS & Try It 3.19 in Illowsky
Complement_&_Rule.swf
The complement of an event A is the event A does not occur.
The complement of event A is denoted by Ac and either event
A or Ac must occur. Therefore,
P(A) + P(Ac) = 1.0
or,

4. P(A) = 1.0 - P(Ac)
For example, consider tossing a fair coin 10 times. Define event
A as;
A: Observe at least one head
Ac: TTTTTTTTTT (observe no heads, 10 tails are tossed)
P(Ac) = (12)10=11024
P(A) = 1.0 − P(Ac) =1−11024=.999
We are fairly sure of observing at least one head in ten tosses.
Dependent vs Independent Events
Independent Events: Consider tossing two die. What is the
probability of throwing a "One" on die #1 and then a "Six" on
die # 2? Answer is 1/6 times 1/6 = 1/36. These events are
independent of each other and P(A&B) = P(A)P(B).
Dependent events: What is the probability of drawing the Queen
of Spades and the King of Spades if no card is repaced after the
first draw. We apply the rule that P(A&B) = P(A)P(B|A) =
P(B)P(A|B). Since A is the queen, P(A) = 1/52 and to then
draw the kink, P(B|A) = 1/51, the answer is 1/52 times 1/51.
Recall that P(B|A) means the probability that event B occurs
given that event A has already occurred. Event B is dependent
upon event A occurring.
WRTG 293 students,
Your first writing assignment will be to rewrite a set of
instructions. The scenario for this
assignment is described below.
________________________
You have just taken a position as a student worker for the
Communications Arts Department at

5. Anderson College. You began your job last week.
Anderson College has an enrollment of 10,000 students. Among
this student population, 20% of
the students are international students for whom English is not a
native language, 10% of the
students are dual-enrollment high school students, 20% of the
students are graduate students, and
the remaining 50% of the student population consists of a
mixture of adult learners and
traditional students.
Anderson adopted LEO as its learning management system two
years ago. Anderson uses LEO
for both its online classes and its hybrid classes.
Since moving to LEO, Dr. Richard Johnson, Dean of the
Undergraduate School at Anderson, and
Dr. Lynn Peterson, Dean of the Graduate School at Anderson,
have noticed that both students
taking classes at Anderson and instructors teaching at Anderson
are often not aware of the
different settings one can choose to view discussions in LEO.
This lack of awareness has caused
confusion and frustration as students and faculty members have
attempted to navigate through
the discussions in their classes.
Dr. Johnson and Dr. Peterson tried to address this problem two
months ago. At that time, they
asked the previous student worker to write instructions on how
to change the settings for
discussions in LEO for the optimal viewing arrangement.
The previous student worker wrote some instructions. However,
the worker wrote them very

6. unprofessionally and poorly. They cannot be distributed to
students in their current form.
Moreover, shortly after the student worker finished the
instructions, he left his position for
another job.
As a result, Anderson College now has a set of poorly designed
instructions that it cannot send
out to students and faculty members. Meanwhile, students and
faculty members are still
experiencing frustration with the system, and they need a
document that guides them through
how to adjust their settings in LEO for viewing discussions.
Dr. Johnson, who is your immediate supervisor, has now asked
you, the new student worker, to
rewrite the instructions that the previous student worker wrote.
He has asked you to use the
same graphics the previous student worker used. He has also
suggested that you use arrows to
point to sections of the graphics if such arrows can help in
understanding specific steps in the
instructions.
Keep in mind that potentially 10,000 students will be using the
instructions, in addition to
various faculty members. The instructions should be clear,
professional, and well designed.
Moreover, you will want to consider the different types of
students at Anderson College,
including their backgrounds and their varying demographics.
Dr. Johnson has given you the following resources to help you

7. in this project:
• Instructions: Tell Them How to Do It! by David McMurrey
• Instructions: How to Write Guides for Busy, Grouchy People
• Wikibooks’ Professional and Technical Writing/Instructions
Dean Johnson has informed you that your introduction should
be very short—no more than one
paragraph of about 4-5 sentences.
___________________________
Strategies to Consider for this Assignment:
Consider your audience. Your primary audience is the students
and faculty members at Anderson
College. However, Dean Johnson will be reviewing your
document as well. Most likely,
department heads will be viewing it also.
Therefore, the dean and the department heads can be considered
secondary audiences.
Length of your instructions:
There is no minimum or maximum number of words for this
document. You will want to follow
the advice given in the three resources that Dean Johnson
provided for you as you design the
new set of instructions.

8. Due Date:
Your instructor will notify you of the due date. You will write
a first draft, your instructor will
comment on the first draft, and you will submit a second draft
using the comments as your guide.
Changing the Discussion Settings in LEO
The following instructions show how you should set up your
discussion settings in LEO.
1. You should click on discussions.
2. Then you want to click on settings.
3. The interface looks like this
4. The next step is to change some settings. Look at this next
picture.
5. Did you see what we just changed? Good!

9. 6. Want to know the next step? Here it is! ☺
7. I hope you see that two settings have now been changed.
Examine the pictures closely to see
what has been changed. It’s important.
8. Clicking save will save these settings.
9. Now, click on any particular discussion, and you will see
how the changes change the interface.
10. Take a look. Cool, eh?!?
11. And more cool features are shown in the next picture.

10. I hope this helps.