1. For each of the following statements, name the distribution(s) of the random variable and
its parameter(s) to your best knowledge. If there is only one exact OR approximating
distribution, please label whether it is exact or approximate. If BOTH exact
Math 215 Fall 2007 Exam 3 Solutions
Low: 42 Average: 76 High: 92
Approximate grade breakdown (if I curved this exam):
85 100
A
70 85
B
0 70
C or below
1. ( R S T ) ( R'S 'T ' )
( R S T ) ( R S T )' ,
i.e. the union of all three, but not
in the intersecti
Math 215 Spring 2010 Exam 1 Solutions
Low: 31 Average: 84 High: 100
Approximate grade breakdown (if I curved this exam):
90 100
A
80 90
B
0 80
C or below
1.
True
For example,
,
.
False
Multiply them and you do not get the identity.
False
True
The solution
Larget - Statistics/Mathematics 309
Solutions to Exam 5A
February 27, 2009
A new method for measuring information about the physical conformation of large organic molecules records the times that photons of a specific wavelength hit a detector. At a parti
Finance 30210
Solutions to Midterm #1 Practice Questions
1) Suppose that you have estimated the following regression (standard errors
associated with each are below in parentheses):
Qd = 300 4 P +
(6.5) (1.2) (60.5)
a) Calculate your forecast at the samp
Larget Statistics/Mathematics 309
Solution to Exam 6Ax
March 11, 2009
An i.i.d. sample X1 , . . . , Xn is taken from a discrete distribution F with probability function f (x) = ( for x = 1, 2, 3, . . . where = (1, ) is an unknown parameter. For this distr
Larget Statistics/Mathematics 309
Solution to Exam 6A
February 27, 2009
An i.i.d. sample X1 , . . . , Xn is taken from a distribution F with density f (x) = (3 /2)x4 e/x for x > 0 where = (0, ) is an unknown parameter. For this distribution, E(X) = /2 and
1. (5 marks) At a certain university in 1993, a record was kept of the number of women
graduating with doctoral degrees in each of six dierent elds of study.
(a) What is this kind of graph usually called?
i.
ii.
iii.
iv.
Histogram
* Bar chart (the variabl
University of Toronto Scarborough
STAB22 Midterm Examination
October 2008
For this examination, you are allowed one handwritten letter-sized
sheet of notes (both sides) prepared by you, a non-programmable,
non-communicating calculator, and writing impleme
Whichever version of the exam you had, all these questions will have been on it, though most likely with
the alternative answers in a dierent order.
1. A linear regression was carried out for predicting one variable y from another variable x. The residual
Quiz 11
Name: _
April, 22nd, 2011
Old McDonald had a farm. And on his farm he had 100 cows. The weight of each cow ranges
evenly between 540 lbs and 600 lbs. Let W be the average weight of these cows and answer the
following questions.
1. Name a good appr
Math 215 Fall 2009 Exam 2 Solutions
Low: 54 Average: 78 High: 98
Approximate grade breakdown (if I curved this exam):
90 100
A
80 90
B
0 80
C or below
1. This just like homework problem 7.5.14.
(a) At
,
111.
(b)
(c)
leads to
, so part way through 1998.
te