Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
September 19, 2014
Solutions to Quiz 1(A)
(8) 1) An automobile manufacturer routinely keeps records on the number of finished
cars (passing all inspections) produc
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2015
Statistics and
Data Analysis
Exam #1
REVIEW
Presenting
Qualitative Data
Summary Table
1. Lists categories & number of elements in category
2. Obtained by tallying responses in category
3. May show fre
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
September 26, 2014
Solutions to Homework 2
A1) Of the cars on a used car lot, 70% have air conditioning (AC) and
40% have a CD player. You are also told that the e
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2013
HW#1
Please only use pen or printer ink, and staple your work!
1) What is going to be the population parameter that we will wish to estimate throughout this
course?
2)
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
StatUB.0103.03: Statistics for Business Control and Regression Models
Prof. Halina Frydman
November 12, 2011
Solutions to Review Questions for Test 2
1) Let be the proportion of times that face 1 or
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
November 25, 2014
Solutions to Homework 7
(6) Exercise 11.108 a)d)
(1) a)
b
b
0 = 99 045 1 = 10281
(2) b)
0 : 1 0
1 : 1 0
reject 0 if
obser 00520 = 1725
Since
ob
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103 Statistics for Business Control and Regression Models
Prof. Frydman
December, 2013
Solutions to Final Exam (A)
1) In order to investigate the feasibility of starting a Sunday edition for
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Frydman
October 16, 2014
Solutions to Quiz 2 (A)
(9) 1) An aerospace company has submitted bids on two separate federal
government defense contracts, A and B. The company estimat
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
October 3, 2014
Solutions to Homework 3
Exercise 4.34. page 198
The IQ scores are values and the probabilities with which these values
occur, say for Market invest
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2016
Chapter 3
Probability: chance that an uncertain event will occur
Experiment: process of obtaining outcomes for uncertain events
Sample space: collection of all possible sample points
Simple event:
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2015
Statistics for Business Control,
Regression and Forecasting
Models
Statistics, Data, &
Statistical Thinking
Introduction
Lucius Riccio
[email protected]
Office: KMC 8171
Office Hours: By Appointm
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
StatUB.0103.03: Statistics for Business Control and Regression Models
Prof. Halina Frydman
November 21, 2011
Solutions to Test 2 (A)
1) (8pts) In a factory the time it takes to assemble given equipme
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
StatUB.0103.03: Statistics for Business Control and Regression Models
Prof. Halina Frydman
October 11, 2011
Solutions to Review Questions (1)
1) Production records for an automobile manufacturer show
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
Chapter 3 Outline: Probability
3.1 Events, Sample Spaces, and Probability





Observation or measurement: the result we see
Experiment: the process of making an observation
o This definition is
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
September 12, 2014
Solutions to Homework 1
Exercise 1.28 (MBS)
a) The variable in question is the inspection rating of highway bridges.
b) Inspection rating is a c
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
December 9, 2014
Solutions to Homework 8
A1) The Wall Street Journal (December 30, 1984) published the data set
containing information on starting salary and heigh
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103
Prof. Halina Frydman
December 12, 2014
Solutions to Quiz 5 (A)
1) A marketing manager for Country Kitchen Corporation (CKC), which
sells snack food product "Nature Bar" in dierent region
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2016
Statistics Notes
Chapter 1
Two types of statistics
o Descriptive
o Inferential
Types of data
o Univariate: one fact for each object (one column in spreadsheet)
o Multivariate: two or more facts for
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
November 25, 2014
Solutions to Quiz 4 (A)
(6) Q1) A certain dealership estimated the following daily distribution
of the number of sold cars
0
1
2
3
() 02 04 03 01
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
2.4 Numerical Measures of Variability

Simplest measure of variability of a quantitative data set is its range.
o Range: equal to the largest measurement minus the smallest
measurement.
Insensitive
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
Chapter 5 Outline
5.1 The Concept of a Sampling Distribution


Neither the sample mean nor the sample median will always fall closer to the
population mean
o We cannot compare these 2 sample statist
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
November 11, 2014
Solutions to Homework 6
A1) A supermarket manager is trying to decide how many check out
registers to keep open during early morning hours. To ai
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
October 23, 2014
Homework 5
(due October 30)
Reading: Chapter 5 from MBS
LN #6 Properties of the sample mean and LN#7 Properties of the sample proportion
A1. Consi
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Halina Frydman
October 12, 2014
Homework 4
(due October 21)
Reading: Chapter 4: 4.54.6, 4.9 (about Uniform distribution only)
from MBS
Lecture Notes #4 on The Normal Distributio
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2014
STATUB.0103.04
Prof. Frydman
November 4, 2014
Solutions to Quiz 3 (A)
(9) 1) Suppose that = a dollar amount you win or lose in a certain
game is normally distributed with the mean of $30 and standard
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2016
STATUB.0103.05Statistics for Business Control and Regression Models
Prof. Frydman
September 6, 2016
Homework 1due Friday, September 15
For any assignment you are permitted to work in teams, but eac
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2016
STATUB.0103.05Statistics for Business Control and Regression Models
Prof. Frydman,
Solutions to Homework 4
(12) Problem 1 A construction job is comprised of two tasks, which we
call task A and Task
Statistics for Business Control and Regression Models
STAT UB 103

Fall 2016
STATUB.0103.06Statistics for Business Control and Regression Models
Prof. Frydman
Solutions to Homework 2
(8) Problem 1
In the class survey, 25 females and 47 males reported their expected annual sa
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
STATUB.0103; 112015; Prof. Tatum Midterm 2A Solutions (from student exams)
(Corrections: Page 4, the first bell curve should have 1.6 where it shows 1.55.
Page 3, (e) the df=n2=4, so the tcriti
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
STATUB.0103, Corrected 101415
Prof. Tatum
Homework #3 Solutions
(Corrections in boldfont on problems 2b, 2c, and 3c.)
1. You want to select 5 investments from a list of 13 possible investments to
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
STATUB.0103
Prof. Tatum
Midterm 2 Study Guide
112015
1. Review the following homework assignments and Solutions, as well as your related
class notes and text sections.
Homework 6: Poisson and Norma
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
STATUB.0103 101215
Prof. Tatum
Homework #4 Solutions
1. [Independence] Consider drawing a card from a shuffled deck. We have shown that
events J and H are independent, with J=cfw_jacks and H=cfw_he
Statistics for Business Control and Regression Models
STAT UB 103

Spring 2012
STATUB.0103
Prof. Tatum
Midterm 1 Study Guide
10415
1. This will be a closed book, closed notes, no cheat sheet exam. On the exam, I will
give you the equation for Bayes Rule and the probability di