Jan 17 Homework Solutions
Math 151, Winter 2012
Chapter 2 Problems (pages 50-54)
Problem 2
In an experiment, a die is rolled continually until a 6 appears, at which point the experiment stops. What is the sample space of this experiment? Let En denote the
Math 151 - Midterm Solutions - Winter 2012
1. The following is a strategy for deciding who goes rst in a game which is to be
played by N players. Each of the players ips a fair coin. If either (a) all coins
come out the same or (b) the number of heads and
Math 151 - Winter 2012 - Final Exam
The exam will be due by 5:00 PM on Wednesday, March 21. It is to be turned in
at my oce (383L). You may use the book, and books in the library, but not internet
resources.
1. An urn contains n white balls and m black ba
March 13 Homework Solutions
Math 151, Winter 2012
Chapter 7 Problems (pages 373-379)
Problem 30
If X and Y are independent and identically distributed with mean and variance 2 , nd
E [(X Y )]2 .
E [(X Y )2 ] = E [X 2 2XY + Y 2 ]
= E [X 2 ] 2E [XY ] + E [Y
March 6 Homework Solutions
Math 151, Winter 2012
Chapter 6 Problems (pages 287-291)
Problem 31
According to the U.S. National Center for Health Statistics, 25.2 percent of males and
23.6 percent of females never eat breakfast. Suppose that random samples
Feb 21 Homework Solutions
Math 151, Winter 2012
Chapter 5 Problems (pages 224-227)
Problem 5
A lling station is supplied with gasoline once a week. If its weekly volume of sales in
thousands of gallons is a random variable with probability density functio
Feb 7 Homework Solutions
Math 151, Winter 2012
Chapter 4 Problems (pages 172-179)
Problem 3
Three dice are rolled. By assuming that each of the 63 = 216 possible outcomes is equally
likely, nd the probabilities attached to the possible values that X can t
Jan 31 Homework Solutions
Math 151, Winter 2012
Chapter 3 Problems (pages 102-110)
Problem 61
Genes relating to albinism are denoted by A and a. Only those people who receive the a
gene from both parents will be albino. Persons having the gene pair A, a a
Jan 24 Homework Solutions
Math 151, Winter 2012
Chapter 3 Problems (pages 102-110)
Problem 12
A recent college graduate is planning to take the rst three actuarial examinations in the
coming summer. She will take the rst actuarial exam in June. If she pas
Math 151 - Midterm Exam - Winter 2012
The exam will be due in class on Tuesday, February 14. Justify all your work
carefully, and carry out all computations completely wherever possible. This is
an open book exam, but do not consult each other or Internet