Homework assignment for chapter 5:
Problems 5.4 (page 177),
5.4A die is thrown (1, 2, 3, 4, 5, 6) and a coin is tossed (H, T). (a) Enumerate the elementary events in the sample space for the die/coin combination. (b) Are the elementary events equally likely? Explain.

A) Elementary events are -
DIE
COIN123456
HEADSH1H2H3H4H5H6
TAILST1T2T3T4T5T6
B) YES, EACH EVENT IS EQUALLY LIKELY TO OCCUR. THERE ARE 12 POSSIBLE OUTCOMES AS A RESULT OF ROLLING OE DIE AND FLIPPING ONE COIN, THEREFORE THE LIKELYHOOD OF ANY ONE EVENT OCCURING IS 1/12.

5.13 (page 186),
5.13Given P(A) = .40, P(B) = .50, and P(A ∩ B) = .05, find - (a) P(A ∪ B)
P(A∪B)=P(A)+P(B)−P(A∩B)
= 0.40 + 0.50 - .05
= 0.85
(b) P(A | B)
P(A|B)=P(A∩B) for P(B)>0
P(B)
= 0.05
0.50
= 0.1
(c) P (B | A)
P(A|B)= P(A∩B) for P(A)>0
P(A)
= 0.05
0.40
= 0.125
(d) Sketch a Venn diagram.

5.15 (page 186)
5.15Samsung ships 21.7 percent of the liquid crystal displays (LCDs) in the world. Let S be the event that a randomly selected LCD was made by Samsung. Find - (a) P(S) = 0.217
(b) P(S′) = P(S) + P(S’) = 1
= 0.217 + S’ = 1
= S’ = 1 - 0.217
= S’ = 0.783
(c) the odds in favor of event S, and
P(S)=P(S)= 0.217 / 0.783 = 0.277
P(S’)1-P(S)

(d) the odds against event S.
P(S’)=1- P(S)= 0.783 / 0.217 = 3.608
P(S)P(S)

Problems 5.22 (page 190),
5.22Which pairs of events are independent?
a.P(A) = .60, P(B) = .40, P(A ∩ B) = .24.
b.P(A) = .90, P(B) = .20, P(A ∩ B) = .18.
c.P(A) = .50, P(B) = .70, P(A ∩ B) = .25.

5.23 (page 190)
5.23The probability that a student has a Visa card (event V) is .73. The probability that a student has a MasterCard (event M) is .18. The probability that a student has both cards is .03. (a) Find the probability that a student has either a Visa card or a MasterCard. (b) In this problem, are V and M independent? Explain....

...WILMINGTON UNIVERSITY
CLASS INFORMATION & SCHEDULE
FACULTY MEMBER: TERM:
COURSE TITLE:
COURSE NUMBER: MBA 6100
OFFICE HOURS/METHOD OF CONTACT:
I. METHODOLOGY:
A. Teaching Methods: Distance learning course
Announcements and instructor guidance; assigned readings; homework problems, chapter information, textbook power point files, and case study.
This course requires stable and regular access to the internet as well as students’ ability to work independently and...

...Statistics 5371 Final Exam Review Fall 2012.
1. Suppose a researcher wants to design a new study with a power of 0.8 and a significance of 0.05 to test whether the caffeine content for a brand of coffee is really 100mg. A previous study gave a mean caffeine level for this brand of 110 mg and a standard deviation of 7 mg. Use PROC POWER to determine how many cups of coffee need testing.
2. A company did a study to estimate the effect of different promotional strategies on the market...

...Tutorial Questions for Exploratory Data Analysis – Summary Statistics & Graphs
1. Customers of a particular bank rated the service provided by the bank on a scale of one to ten, correct to one decimal point. The bank categorised their customers as either (1) Private Account holders or (2) Business Account holders. The information below summarises customer attitudes towards the quality of service provided by the bank. Use the output to answer the questions below.
a) Briefly...

...CGE13101 Understanding Society Through Statistical Reasoning
Tutorial 3
1. A wholesale appliance distributing firm wished to study its accounts receivable for two successive months. Two independent samples of 50 accounts were selected for each of the two months. The results have been summarized below.
Frequency distribution for accounts receivable
Amount
March Frequency
April Frequency
$0 - under $2,000
$2,000 - under $4,000
$4,000 - under $6,000...

...2.41
a.
Number of Internet Searches
Percentages
A few search results 23
First page of search results 39
First two pages 19
First three pages 9
More than first three pages 10
b.
Pie charts and bar graphs are two ways of...

...Definition of Statistics, Scope and importance of Statistics:Statistics in business and management: Frequency distribution: Parts of table:
Definition of Statistics:
1. Statistics can be defined as the collection presentation and interpretation of numerical data.- Croxton and Crowed.
2. Statistics are numerical statement of facts in any department of enquiry placed interrelation to each other.- Bouly.
3. Statistics are measurement, enumerations or estimates of natural or social...

...1.1 For the following situation, indicate whether the statistical
application is primarily descriptive or inferential.
“The manager of Ann’s Fabric Shop has collected data for 10 years
on the number of each type of dress fabric that has been sold at the
store. She is interested in making a presentation that will illustrate
these data effectively.”
Suggested Answer:
This application is primarily descriptive in nature. The owner
wishes to develop a presentation. He will most likely use...