NEW YORK UNIVERSITY
DEPARTMENT OF ECONOMICS
ECON-UB.18.011: Statistics
HOMEWORK #2
Due by 10am on Wednesday September 25
Problem 1 Create 100 observations of a Normal Random Variable with
mean = 0 and standard deviation = 1.
a Create the histogram. What c
NEW YORK UNIVERSITY
DEPARTMENT OF ECONOMICS
ECON-UB.18.011: Statistics
HOMEWORK #1
Due by 10am on Wednesday September 18
The following two problems refer to exercises in the book (p. is the page
number)
Problem 1 2.136/p. 103
Problem 2 2.30/p. 52
Problem
NEW YORK UNIVERSITY
DEPARTMENT OF ECONOMICS
ECON-UB.18.011: Statistics
HOMEWORK #5
Due by 10am on Wednesday October 16.
NEW YORK UNIVERSITY
Due by 10am on Wednesday October 16
Problem 1 An automobile manufacturer produces cars, of which 5% have a
serious
NEW YORK UNIVERSITY
DEPARTMENT OF ECONOMICS
ECON-UB.18.011: Statistics
HOMEWORK #4
Due by 10am on Wednesday October 9
Problem 1 Consider two randomly selected corporate bonds: A and B. Suppose that the probability that bond A defaults is 0.5. If bond A de
Statistics
New York University - Fall 2013
Prof.: Roman Frydman
Solutions to Homework 4
Problem 1
A. Let us call DA the event where bond A defaults. For B; we call it DB : As we know from
class, the total probability of DB is given by:
Pr (DB )
c
= Pr (DB
NEW YORK UNIVERSITY
DEPARTMENT OF ECONOMICS
ECON-UB.18.011: Statistics
F 9:30-12:15 SILVER 405
Fall 2013
Professor Roman Frydman
[email protected]
19 West 4th Street, Room 515
Office hours: Friday 12:20-1:20
Teaching Assistants:
Francisco Espinosa
fje
What Oswald Spengler called the Faustian spirit of the 19th century gave
us all the great inventions that inform our daily lives: electricity, the
automobile, the aeroplane, and so forth. The latter part of the 19th century
was the most fecund period of h
Problem 1 (Exercise 2.136)
a.
b.
c.
d.
Pie chart
Type of gun
Rifle
See the graph below:
35
30
25
%
20
15
10
5
0
Rifle
Sh o tg u n
Rev o lv er
Semi au to Pisto l
Ty pe of Gun
Lo n g Gu n
Han d g u n
So meOth er
Problem 2 (Exercise 2.30)
a. Using MINILAB we
Statistics
New York University - Fall 2013
Prof.: Roman Frydman
Solutions to Homework 2
Problem 1
a. The following picture displays the histogram:
The blue line is the shape of a normal distribution with mean 0 and standard deviation equal to 1:
b. We com
NEW YORK UNIVERSITY
DEPARTMENT OF ECONOMICS
ECON-UB.18.011: Statistics
HOMEWORK #3
Due by 10am on Wednesday October 2
Problem 1 In a given population 10% of individuals are educated and 60%
are honest. Suppose that one individual is selected at random fro
Solution to Problem Set 3
Problem 1
Denote E the event that a selected individual is educated, and H the event that the individual is honest.
()
The given probabilities are ( )
, and besides that we know that the events E and H
are independent.
A. The ind
Statistics: Solution of Homework #5
Problem 1
We will use the table f. (n=10) on page 816 in the book, which shows the cumulative binomial
probabilities.
Using the binomial table we find
A. The probability that a car is defective is 0.05, so we focus at t
Guide to Minitab
ECON-UA 18
1. Import Data (27-28)
There are several ways to load data into Minitab.
a. Key-in data in the worksheet
Example:
C1, C2is the variable name. Labels can be added in the second row.
You can also enter data in a copy-paste manner