Exercises for Chapter 1
Exhibit 1
Part of the data bank of a corporation is shown below.
Employee
Number
23450
34568
23123
23007
Gender
Male
Female
Female
Male
Department
Accounting
IT
Personnel
Finance
Years of
Experience
15
24
20
9
Employee Rank
(1 - 10
2
Probability
2.1
Sample Spaces and Events
Sample Spaces and Events
An experiment is any activity or process whose outcome is
subject to uncertainty.
Although the word experiment generally suggests a
planned or carefully controlled laboratory testing situ
Answer of Exercises of Chapter 5
11. a.
Duration of Call
x
1
2
3
4
f (x)
0.25
0.25
0.25
0.25
1.00
b.
f (x)
0.30
0.20
0.10
x
1
0
2
3
4
c.
f (x) 0 and f (1) + f (2) + f (3) + f (4) = 0.25 + 0.25 + 0.25 + 0.25 = 1.00
d.
f (3) = 0.25
e.
P(overtime) = f (3) +
BADM 216 Homework 2
Please solve the following questions related to Chapter 4: Introduction to Probability.
1. Suppose that, from 8 students, we want to take a committee of students. How
many committees consisting of 3 students can be selected? How many c
1.
A college plans to interview 8 students for possible offer of graduate
assistantships. The college has three assistantships available. How many groups
of three can the college select?
Answer: 28
2.
A student has to take 9 more courses before he can gra
Answer of Exercises of Chapter 3
29. a.
Range = 60 28 = 32
IQR = Q3 Q1 = 55 45 = 10
b.
x
435
48.33
9
( xi x )2 742
s2
( xi x )2 742
92.75
n 1
8
s 92.75 9.63
c.
33. a.
The average air quality is about the same. But, the variability is greater in Anaheim
BADM 216 Homework 1
Please solve the following questions related to Chapter 3: Descriptive Statistics.
1.
The closing stock price of Ahmadi, Inc. for a sample of 10 trading days is
shown below.
Day
Stock Price
1
2
3
4
5
6
7
8
9
10
84
87
84
88
85
90
91
83
Chapter 1 Homework
instructions | help
2.
value:
7.00 points
Maria Chavez owns a catering company that serves food and beverages at parties and business
functions. Chavezs business is seasonal, with a heavy schedule during the summer months and holidays
a
1
Overview and
Descriptive Statistics
1.4
Measures of Variability
Measures of Variability
Reporting a measure of center gives only partial
information about a data set or distribution. Different
samples or populations may have identical measures of
center