Chapter 3 Quiz
1. A sample of 10 employees in the graphics department of Design, Inc. is
selected. The employees' ages are given below:
Employee Number
1
2
3
4
5
6
7
8
9
10
Age
34
35
39
24
62
40
18
35
28
35
a. What is the average age of the employees in t
Chapter 7 Quiz
1. An automotive repair shop has determined that the average service time on an
automobile is 130 minutes with a standard deviation of 26 minutes. A random
sample of 40 automotive services is selected.
a. Show the sampling distribution of t
Chapter 5 Quiz
1. The police records of a metropolitan area kept over the past 300 days show the
following number of fatal accidents.
Number of Fatal
Accidents
x
Number of Days
f(x)
0
1
2
3
4
45
75
120
45
15
a. Develop a probability distribution for the d
Chapter 8 Quiz
1. In order to determine the average weight of carry-on luggage by passengers in
airplanes, a sample of 25 pieces of carry-on luggage was collected and weighed.
The average weight was 18 pounds. Assume that we know the standard
deviation of
Chapter 1
Data and Statistics
Applications in Business and Economics
Data
Data Sources
Descriptive Statistics
Inferential Statistics
Slide1
Applications in
Business and Economics
Accounting
Public accounting firms use statistical sampling procedures
when
intro stat homework 1 solution
Page 1 of 5
Indiana University South Bend
Judd Leighton School of Business and Economics
Department of Economics
Econ E270
Introduction to Statistical Theory in Economics and Business
Spring 2016
Homework 1
Due Date: January
Practice Problems for Exam 1 SOLUTION
Econ-E270 Fall 2016
1. (Chapter 1) J.D. Power and Associates conducts vehicle quality surveys to provide automobile
manufacturers with consumer satisfaction info about their products. Using a sample of vehicle owners
Econ E270 Fall 2016 Quiz 4 Solution
1. Annual per capita consumption of milk is 21.6 gallons in the United States. Being from the Midwest, you
believe milk consumption is higher in Midwest and wish to support your opinion. A sample of 16 individuals
from
Chapter 6 Quiz
1. Given that Z is a standard normal random variable, determine the following
probabilities:
a. P (-2.51 < Z < -1.53) = ?
b. P (Z > -2.12) = ?
c. P (-2.08 < Z < 1.46) = ?
2. Duckworth Drug Company is a large manufacturer of various kinds of
Chapter 1 Quiz
1. The following data set provides information about five college professors.
Name
Specialty
Sex Age Rank
Able
Bastien
Martin
Ross
Young
Economics
Management
Marketing
Finance
Accounting
M
F
M
F
F
40
33
52
30
35
Associate Professor
Full Pro
Chapter3
DescriptiveStatistics:NumericalMethods
MeasuresofLocation
MeasuresofVariability
MeasuresofRelativeLocationandDetectingOutliers
x %
Slide1
MeasuresofLocation
Mean
Median
Mode
Mean,Median,Mode,WhichIstheBest?
Mean,Median,Mode,WhatistheShapeofthe
Di
Chapter 7
Sampling and Sampling Distributions
Point Estimation
Introduction to Sampling Distributions
Sampling Distribution of x
Properties of Point Estimators
n = 100
n = 30
1
Statistical Inference
The purpose of statistical inference is to obtain
infor
Chapter 8 Interval Estimation
Interval Estimation of a Population Mean:
Large-Sample Case
Interval Estimation of a Population Mean:
Small-Sample Case
Determining the Sample Size
x
[-x
x
[-
-]
-]
[-x
-]
1
Interval Estimation of a
Population Mean:
Samplin
Due: Tuesday, September 23 @ 10:00 PM.
Assignment #1 E270
Fall 2014
Dr. Hedayeh Samavati
Keenan Fuller
Name: _
Numeric Descriptive Statistics
Summary Table for Mileage Highway and Mileage City
Descriptive Measures
Mileage Highway
Mileage City
Mean
30.89
2
Chapter 2 Quiz
1. The frequency distribution below was constructed from data collected from a
group of 250 students.
Height in Inches
Frequency
58 - 63
64 - 69
70 - 75
76 - 81
82 - 87
88 - 93
94 - 99
Total
30
50
20
60
40
30
20
250
a. What is the frequency
Econ E270 Fall 2016 Take Home Quiz 3
Deadline: Turn it in at the beginning of class on Thursday, 10/27/2016
SHOW ALL your Work for Maximum Credit! Work Alone.
Name:_
Score: _/10
* Show up to two decimal points
1. The average cost per person for crashes in