David Sablan
MA 151-04
P. Singh
4 Apr 2013
Homework 4.5
P. 240-241
1. Selecting Cards Find the probability of getting 2 face cards (king, queen, or jack) when 2
cards are drawn from a deck without replacement
1 card drawen is a face card
(4*3)/52= 12/52=3

David Sablan
MA 151-04
P. Singh
Homework 5.2
1. Defective Transistors From past experience, a company has found that in cartons of
transistors, 92% contain no defective transistors, 3% contain one defective transistor, 3% contain
two defective transistors

1. Hospitals The following set of data represents the
number of hospitals for selected states. Find the mean,
median, mode, midrange, range, variance, and standard
deviation for the data.
53
84
28
78
35
111
40
166
108
60
123
87
84
74
80
62
MEAN:
79.5625
M

1. Hospitals The following set of data represents the
number of hospitals for selected states. Find the mean,
median, mode, midrange, range, variance, and standard
deviation for the data.
53
84
28
78
35
111
40
166
108
60
123
87
84
74
80
62
MEAN:
79.5625
M

David Sablan
MA 151-04
P. Singh
3/20/13
Homework 4.1
1. What is a probability experiment? It is a chance process that leads to well-defined
outcomes.
2. Define sample space.
A set of all possible outcomes of a probability experiment.
3. What is the differ

David Sablan
MA 151-04
P. Singh
3/20/2013
omework 4.1
1. What is a probability experiment? It is a chance process that leads to well-defined outcomes.
2. Define sample space.
A set of all possible outcomes of a probability experiment.
3. What is the diffe

David Sablan
MA 151-04
P. Singh
3/28/13
Homework 4.2
1. Define mutually exclusive events, and give an example of two events that are mutually
exclusive and two events that are not mutually exclusive.
-Two events are mutually exclusive events if they canno

David Sablan
MA 151-04
P. Singh
3/28/13
Homework 4.2
1. Define mutually exclusive events, and give an example of two events that are mutually
exclusive and two events that are not mutually exclusive.
-Two events are mutually exclusive events if they canno

David Sablan
MA 151-04
P. Singh
2 April 2013
Homework 4.3 & 4.4
Homework 4.3
1. State which events are independent and which are dependent.
a. Tossing a coin and drawing a card from a deck Independent
b. Drawing a ball from an urn, not replacing it, and t

David Sablan
MA 151-04
P. Singh
4 Apr 2013
Homework 4.5
2) Selecting a Committee A parent-teacher committee consisting of 4 people is to be formed
from 20 parents and 5 teachers. Find the probability that the committee will consist of these
people. (Assum

David Sablan
MA 151-04
P. Singh
Homework 5.1
1. Define and give three examples of a random variable.
-A random variable is a variable whose values are determined by choice.
Three examples:
a. If a die is rolled, a letter such as X can be used to represent

David Sablan
MA 151-04
P. Singh
Homework 5.3
1. Which of the following are binomial experiments or can be reduced to binomial experiments?
a. Surveying 100 people to determine if they like Sudsy Soap
-Yes
b. Tossing a coin 100 times to see how many heads

David Sablan
MA 151-04
28 April 2013
Homework 6.1
1. What are the characteristics of a normal distribution?
a. It is bell-shaped
b. It is symmetric about the mean.
c. Its mean, median, and mode are equal.
d. It is continuous
e. It never touches the x axis

David Sablan
MA 151-04
P. Singh
1 May 2013
Homework 6.2
2. Teachers Salaries The average salary for first-year teachers is $27,989. If the distribution
is approximately normal with , what is the probability that a randomly selected first-year teacher
make

David Sablan
MA 151-04
P. Singh
3/10/2013
Homework 3.3
1. What is a z score?
Also known as a standard score. It tells how many standard deviations a data value is above or below the mean for a specific distribution of values.
2. Define percentile rank.
It

David Sablan
MA 151-04
P. Singh
3/10/2013
Homework 3.3
1. What is a z score?
Also known as a standard score. It tells how many standard deviations a data value is above or below the mean for a specific distribution of values.
2. Define percentile rank.
It

David Sablan
MA 151-04
Dr. P. Singh
9 February 2013
Homework 2.1 p. 46-47
#2. Name the three types of frequency distributions, and explain when each should be used.
a. Categorical frequency distributions should be used if you are putting nominal or ordina

David Sablan
MA151-04
Dr. Singh
20 Feb 2013
Critique: Do a critique report on the validity statistic
cited to prove the assertions made in the Governor's address & the
democratic rebuttal.
Each Group will Submit a Report. It is worth one homework assignme

MA 151
Section 4
Student Name & email: David Sablan Jr.,
[email protected]
Special Project:
Due Date: Review day for chapter 1
Gender
Height
Sr. #
Major
(M/F)
(ft)
1
Computer Information
M
57
Systems
2
Health Science
M
53
3
Health Science
F
5
4
Eleme

1.
Statistics is the science of conducting studies to collect, organize, summarize, analyze, and draw conclusions
from data.
2.
3.
4.
5.
6.
7.
A variable is a characteristic or attribute that can assume different values.
Data are the values (measurements

David Sablan
MA 151-04
Dr. P. Singh
9 February 2013
Homework 2.1 p. 46-47
#2. Name the three types of frequency distributions, and explain when each should be used.
a. Categorical frequency distributions should be used if you are putting nominal or ordina

David Sablan
MA151-04
13 Feb 2013
Homework 2.2
1. Do Students Need Summer Development? For 108 randomly selected college applicants, the
following frequency distribution for entrance exam scores was obtained. Construct a histogram,
frequency polygon, and

David Sablan Jr.
MA151-04
13-Feb-13
Homework 2.2
Bin
Frequency
98.5
107.5
116.5
125.5
134.5
98.5
107.5
116.5
125.5
134.5
More
6
22
43
28
9
0
Cf
6
28
71
99
108
Midpoint
94
103
112
121
130
1. Do Students Need Summer Development? For 108
randomly selected co

David Sablan Jr.
MA151-04
Dr. Singh
18-Feb-13
Homework 2.3
3. Internet Connections The following data represent the
estimated number (in millions) of computers connected
to the Internet worldwide. Construct a Pareto chart and
a horizontal bar graph for th

David Sablan
MA151-04
3/3/2013
Homework 3.1
1. Grade Point Averages The average undergraduate
grade point average (GPA) for the 25 top-ranked
medical schools is listed below.
3.80 3.77 3.70 3.74 3.70
3.86 3.76 3.68 3.67 3.57
3.83 3.70 3.80 3.74 3.67
3.78

David Sablan
MA151-04
3/3/2013
Homework 3.1
1. Grade Point Averages The average undergraduate
grade point average (GPA) for the 25 top-ranked
medical schools is listed below.
3.80 3.77 3.70 3.74 3.70
3.86 3.76 3.68 3.67 3.57
3.83 3.70 3.80 3.74 3.67
3.78

David Sablan
MA 151-04
Prof. Singh
3/5/2013
Homework 3.2
1. What is the relationship between the variance and the standard deviation?
The square root of the variance is the standard deviation.
2. Why might the range NOT be the best estimate of variability

David Sablan
MA 151-04
Prof. Singh
3/5/2013
Homework 3.2
1. What is the relationship between the variance and the standard deviation?
The square root of the variance is the standard deviation.
2. Why might the range NOT be the best estimate of variability