This preview shows pages 1–2. Sign up to view the full content.
BA 240
W. Li
Answer Sheet
QUIZ 3
Show your work clearly and completely.
Problem 1
:
In a survey of 100 workers in ABC Inc., 70% are Male (MALE) and 10% hold MBA
degrees (MBA). In addition, among those who have MBA degrees, 60% of them are
Male. Construct a twoway contingency table (use the pairs of events MALE and
FEMALE, MBA and NO MBA), and use it to answer the following questions.
Keep
answers in Fractions (DO NOT SIMPLIFY)
for Problem 1a) to 1e)
(1 point each)
MALE
FEMALE
TOTAL
MBA
6
4
10
NO MBA
64
26
90
TOTAL
70
30
100
Note 1: Calculate the actual values; do NOT write percentage or probability.
Note 2: Include TOTAL Row and TOTAL Column.
a)
Find the probability of a chosen worker, who is a MALE and also holds a MBA degree.
.
“both…and…” means INTERSECTION “∩”
100
6
)
(
MBA
MALE
P
b)
Find the probability of a chosen worker, who is a MALE and also does not hold a MBA
degree.
“both…and…” means INTERSECTION “∩”
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 05/15/2011 for the course BA 240 taught by Professor Li during the Spring '08 term at Bellevue College.
 Spring '08
 Li

Click to edit the document details