Review Exam 1
This is a sample of problems that would be good practice for the exam. This is by no means a
guarantee that the problems on the exam will look identical to those on the exam but it should
give you an idea of the level of diculty and the scop
June 5, 2009
Math 244 Spring 2009 Quiz 8
Name:
1. An astronomer is interested in measuring the distance, in light years, from his observatory to
the star Polaris. Although the astronomer has a measuring technique, he knows that, because
of the changing at
May 29, 2009
Math 244 Spring 2009 Quiz 7
Name:
1. Suppose sample data is collected for a particular measurement. The resulting 15 measurements are:
0.68, 2.1, 3.6, 5.3, 7.1, 9.1, 11.4, 13.9, 16.7, 20, 24.1, 29.1, 35.8, 46, 68
Construct two probability plo
May 18, 2009
Math 244 Spring 2009 Quiz 6
Name:
1. A random sample of 20 grams of soil is collected from the moon. Let X and Y represent the
amount in grams of Iron and Calcium respectively in the sample. Suppose that the random
variables X and Y are known
May 15, 2009
Math 244 Spring 2009 Quiz 5
Name:
1. Suppose that 65% of all drivers in a certain state regularly wear seat belts. A random sample
of 500 drivers is selected.
(a) (1 Point) Let X =the number of drivers selected who regularly wear seat belts.
May 8, 2009
Math 244 Spring 2009 Quiz 4
Name:
1. Suppose that the number of 911 calls in a certain small city is a Poisson process with a rate
of 20 calls per hour.
(a) What is the probability that exactly 13 calls are received between 10:00 AM and 10:30
May 1, 2009
Math 244 Spring 2009 Quiz 3
Name:
1. An appliance dealer advertises three dierent models of upright freezers having 13.5, 16.2 and
19.7 cubic feet of storage space, respectively. Let X = the advertised storage space purchased
by the next custo
April 15, 2009
Math 244 Spring 2009 Quiz 2
Name:
1. Suppose that in a class of 30 students there are 12 men and 18 women. From this class, a
team of 5 students is to be selected to compete in a competition.
(a) (2 Points) How many ways are there to choose
April 6, 2009
Math 244 Spring 2009 Quiz 1
Name:
1. In 2007/2008 basketball season the University of North Carolina (UNC) played 50 basketball
games. Below if a histogram of the relative class frequencies of their nal scores in each of
those 50 games. Each
Practice Problems
1. A citys temperature (measured at 12:00 noon) is modeled as a normal random variable with
mean and standard deviation both equal to 10 degrees Celsius. If the temperature is recorded
at 12:00 every day for one week what is the probabil
Math 244 Exam 2
May 22, 2009
Name:
Show all work and indicate your nal answers clearly. Answers without clear justication will be given very little credit.
Problem Possible Points Score
1
13
2
22
3
14
4
17
5
18
6
16
Total
100
1
1. A tennis coach has a ba
Review Exam 2
This is a sample of problems that would be good practice for the exam. This is by no means a
guarantee that the problems on the exam will look identical to those on the exam but it should give
you an idea of the level of diculty and the scop
Math 244 Exam 1
April 24, 2009
Name:
Show all work and indicate your nal answers clearly. Answers without clear justication will be given very little credit.
Problem Possible Points Score
1
12
2
10
3
12
4
12
5
15
6
21
7
15
Total
97
1
2
1. (12 Points) The