MATH 323 - Quiz 6
SOLUTIONS
No calculators are allowed. Show computations, an answer alone does not count!
Encircle final answers.
Problem 1. (10 pts) Let X1 and X2 denote the proportion of time, that employees I and II,
respectively, actually spend time
MATH 323
Spring 2013
Practice Final - Key
1. From a box containing 5 white and 7 red balls, 4 balls are selected.
a) Find the probability that exactly 3 red balls are selected.
X = # of red balls selected; hypergeometric.
35
99
P (X = 3) =
b) Let X denote
MATH 323 - Quiz 5
SOLUTIONS
=
NAME:
.
Give some explanation, an answer alone does not count! Encircle final answers.
Problem 1. (5pts)
Suppose the sediment density (g/cm) of a randomly selected specimen from
4
a certain region is normally distributed with
Midterm Exam
Math 323
October 5, 2016
SOLUTIONS
=
Name:
Problem:
1
2
3
4
5
6
Total
Points:
12
16
14
14
16
18
90
Score:
1. (12 points) Matt is giving a dinner party. His current wine supply includes 8 bottles of zinfandel,
10 of merlot, and 12 of cabernet.
MATH 423 - Quiz 3
SOLUTIONS
=
NAME:
.
Give some explanation, an answer alone does not count! Encircle final answers.
Problem 1. (7pts) A certain brand of freezer is available in three different capacities: 3, 4, and 5.
Let X = the rated capacity of a free
MATH 423 - Quiz 1
T
N
50
NAME: .
L
U
0
1
S
Give some explanation, an answer alone does not count! Encircle final answers.
Problem 1. (2 pts) Suppose that vehicles taking a particular freeway exit can turn right (R), turn
left (L), or go straight (S). Cons
MATH 423 - Quiz 2
SOLUTIONS
=
NAME:
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Give some explanation, an answer alone does not count! Encircle final answers.
Problem 1. (4 pts) A computer consulting firm presently has bids out on three projects. Let Ai =
cfw_awarded project i, for i = 1, 2, 3, a
MATH 323 - PROBABILITY DISTRIBUTIONS AND THEIR MOMENTS
Convention: If a pmf or a pdf is not specified at some point, then it is assumed to be zero at
that point.
Discrete Distributions
Binomial with parameters n, p:
!
n x
P (X = x) =
p (1 p)nx ,
x
E(X) =
MATH 423 - Quiz 4
SOLUTIONS
=
NAME:
.
Give some explanation, an answer alone does not count! Encircle final answers.
Problem 1. (6pts) Annie and Alvie have agreed to meet between 5:00 p.m. and 6:00 p.m. for
dinner at a local health-food restaurant. Let X