MAT2055
Statistics
Syllabus
University of Northwestern St. Paul
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Version 1:08/15
2015 University of Northwestern St. Paul
MAT2055 Syllabus
University of Northwestern

IEMS 303: Statistics I
Midterm Exam
February 11, 2015
NAME _
1) You are designing a video game that involves travel over land or sea. At the first level
of the game, there are two travel modes cfw_Land or Sea. At the second level of the game,
there are ch

Probability II
Textbook sections 2.5
Independence
Two events A and B are independent if P(AB) =
P(A)P(B) and dependent otherwise
A better definition is that A and B are independent if
P(A | B) = P(A) and dependent otherwise
Note that P(A | B) = P(A) if an

Probability I
Textbook sections 2.1, 2.2, and 2.4
Sample Spaces and Events
An experiment will mean an action or process
that produces a result subject to uncertainty
An outcome is the result of an experiment
The sample space of an experiment, denoted by
,

General steps for Hypothesis testing
From the problem context, identify the parameter of
interest.
State the null hypothesis, H0 involving an equality for the
parameter of interest.
Specify an appropriate alternative hypothesis, H1.
Choose a significa

Assignment 3.2part 1: p.90-91 #1,2,6,8,10
1. Listed below are results from the National Health and Nutrition examination. These results indicate the
working status of the person being surveyed, and the listed values represent these responses: 1 = working,

Mathematics:
A Christian Perspective
STUDENT VERSION
Gino Santa Maria. Image from BigStockPhoto.com.
James Bradley, Calvin College
Andrew Busch, Fremont High School, Fremont, Michigan
David Klanderman, Trinity Christian College
Eve Ricketts, Grand Rapids

Mat2055-Statistics
Test 1
Name _ _
Please show your work and answer below.
For problems 1, 2, and 3, determine whether the given value is a parameter or statistic.
1. A study of all 2223 persons aboard the Titanic found that 706 survived when it sank.
2.

CHAPTER 8: CONFIDENCE INTERVALS
Exercise 1.
The standard deviation of the weights of elephants is known to be
approximately 15 pounds. We wish to construct a 95% confidence interval
for the mean weight of newborn elephant calves. Fifty newborn elephants
a

CHAPTER 9: HYPOTHESIS TESTING SINGLE
MEAN AND SINGLE PROPORTION
Exercise 1.
You are testing that the mean speed of your cable Internet connection is more than
three Megabits per second. What is the random variable? Describe in words.
Solution
The random v

CHAPTER 12: LINEAR REGRESSION AND
CORRELATION
Exercise 1.
A vacation resort rents SCUBA equipment to certified divers. The resort charges an
up-front fee of $25 and another fee of $12.50 an hour.
What are the dependent and independent variables?
Solution

IEMS 303: Statistics I ,
Midterm Exam
February 11, 2015
NAME
1) You are designing a video game that involves travel over land or sea. At the ﬁrst level
of the game, there are two travel modes {Land or Sea}. At the second level of the game,
there are cho