ISyE 3770 Statistics and Applications Homework #9 SOLUTION
1. The nicotine contents, in milligrams, for 40 cigarettes of a certain brand were recorded
as follows:
7ggn/wrli77425 ,_
5
< a. Calculate the sample mean.
. Calculate the sample stand

ISyE 3770 Statistics and Applications Homework #6
SOLUTION
1. Complete problems 4-2 (a through (1 only), 4-6,4-20,
and 4-40 ' 4
2. Given a standard normal distribution, find the area (draw
a sketch to assist you) under the curve which lies:
a. To the left

SOLUTION
ISyE 3770 Statistics and Applications Homework #3
What is the expected value, (E00), of the numbers that show up on the face
when tossing a fair dice?
. What is the variance, [V(X), of the numbers that show up on the face when
tossing a fair di

SOLUTION
ISyE 3770 Statistics and Applications Homework #5
l. The proportion of people who respond to a certain mail-order solicitation is a
2(x+2)
5 I
x < 1. Find the probability that more than 'A but less than '/2 of the people
contacted will respond

ISyE 3770 Statistics and Applications Homework #7 SOLUTION
1. Suppose that X and Y are independent random variables having the
joint probability mass distribution
x
y
Find
a.
b.
c.
d.
f(x,y)
1
3
5
2
0.10
0.20
0.10
4
0.15
0.3
0.15
E(2X - 3Y)

ISyE 3770 Statistics and Applications Homework #4 SOLUTION
1. A manuscript is sent to a typing firm consisting of typists A, B, and C.
If it is typed by A, then the number of errors made is a Poisson
random variable with mean 5.0; if typed

HW#2 SOLUTION
ISyE 3770 Statistics and Applications Homework #2
1. A survey was conducted of 100 students in the Tech Square Walmart. Sixty of
the 100 students indicated they visited the store because of an
advertise