MCD 2080: Solution Week 6: The normal distribution
30.
(a) When using tables to obtain standard normal probabilities, values of Z can only be
specified to two decimal places. Use Table 1 in the statistical tables provided on the
website to obtain the prob

MCD 2080: Solution Week 5: Discrete probability distributions
24.
Among households in which at least one child is attending a private school, it is found that the
total number of tablets (iPad, Kindle, etc.) owned by members of the household has the
follo

Tutors Name
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Tutorial Day
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MCD2080 SAMPLE TEST 1-VERSION A
General Instructions
The test is closed book, and must be completed during your computing lab session.
You have 20 minutes writing time.
This test is worth 3% of the trimesters a

MCD 2080: Solution Week 8: Estimation of the population
mean; Hypothesis testing
39.
Formula for 95% confidence interval: x t( 48, 0.025)
s
n
x = 204.209 , s = 0.461146
t(48,0.025) = 2.0106 (note that this is critical value from Excel; be sure that you un

MCD 2080: Solution Week 9: Hypothesis tests about the mean
of a single population. Inference about the proportion in a
single population.
45.
(a) Suggest appropriate null and alternative hypotheses, and explain your choice of null
and alternative hypothes

Week 6: Tutorial: The normal distribution
30.
(a) When using tables to obtain standard normal probabilities, values of Z can only be
specified to two decimal places. Use Table 1 in the statistical tables provided on the
website to obtain the following pro

Tutors Name
_
Tutorial Day
_
Tutorial Time
_
MCD2080 SAMPLE TEST 1-VERSION B
General Instructions
The test is closed book, and must be completed during your computing lab session.
You have 20 minutes writing time.
This test is worth 3% of the trimesters a

Tutors Name
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Tutorial Day
_
Tutorial Time
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MCD2080 SAMPLE TEST 2 VERSION A
General Instructions
The test is closed book, and must be completed during your computing lab session.
You have 20 minutes writing time.
This test is worth 3% of the trimesters a

MCD2080 Week 4
Bring Statistical tables to this lecture
Discrete probability distributions
Textbook references:
Berenson et al Basic Business Statistics 3,
Chapter 5 Sections 5.1, 5.3
1
Checklist Discrete Probability distributions
Metric random variables

IMPORTANT
WARNING
Basing your study entirely on past exam papers is very risky
because the WHOLE UNIT is examinable - not just those
topics
which
appeared
on
the
previous
papers.
The current Trimester's paper WILL contain questions which
differ from those

MCD 2080: Solution Week 7: Critical values; Sampling
distributions
34. If the machine is operating correctly:
Let X be the random variable length of subcomponent. Then if the machine is operating
correctly, X ~ N (117, 2.12 ) . Define the corresponding st

MCD2080 Week 10
Chi square test for independence among categorical variables
Components of time series: Trend, Seasonal, Cyclic, Irregular
Bring Statistical tables to this lecture
Textbook references:
Berenson et al Basic Business Statistics 3,
Section 15

MCD2080 Week 11
Time series
The Trend component and Regression analysis of time series data
Different trend shapes
Modelling and forecasting
Assessing a model with in-sample and out-of-sample data
The Seasonal components
Modelling and forecasting with t

Week 12: Tutorial: Time series; Modelling and forecasting
with trend and seasonal models
60.
Recently the economic welfare of North Carolina has been in the spotlight with the
Democratic Convention being held there in preparation for the 2012 Presidential

Chapter 12:
12.1 12.4, (Data for 12.4 is provided in Excel file INTERNET.xls. Obtain the regression output and
use it for this problem, and 12.15, 12.37 below.)
12.10, 12.15(a), (c), 12.37
Chapter 14:
14.8, (Let 1989 correspond to t = 0)
14.9, (Let 1969 c

Office Use Only
Monash University
Semester ONE Examination Period 2012
Faculty of Business and Economics
EXAM CODES:
ETX1100
TITLE OF PAPER:
Business Statistics
EXAM DURATION:
2 hours writing time
READING TIME:
10 minutes
THIS PAPER IS FOR STUDENTS STUDYI

MCD2080 Sample Test 3: Version A Estimation, Hypothesis testing, Inference about
proportion - Solution
Question 1
[1 + 2 + 2 + 1 + 1.5 + 1.5 + 2 + 1 + 2 = 14 marks]
Suppose the number of seats filled per day in a cinema is normally distributed. A cinema m

Week 10: Tutorial: Correlation and regression between
quantitative variables.
51.
In the Week 9 lecture (refer to the plot and the fitted line on slide #22), data on
manatee deaths due to powerboats was used to construct a linear regression model
relating

Sample Test 2: Version A - Normal distribution, sampling and estimation - Solution
Time allowed: 20 minutes. All answers are to be written in the spaces provided on the question
paper. The test is closed-book and calculators are permitted. Excel may not b

1
Solutions to ETX1100 exam, S2 2012
Question 1 [2+2+2+2+2 = 10 marks]
(a) A credit card companys records show that 5% of their customers fail to pay the minimum
repayment on their credit card each month. A random sample of 20 credit card holders is
selec

Week 2: Tutorial: Descriptive statistics for raw data
9. The owner of a large fleet of taxis is trying to estimate his costs for next years operations.
One of the major costs is fuel purchases. To estimate fuel purchases, the owner needs to
know the total

Office Use Only
Monash University
Solutions to Semester ONE Examination Period 2012
Faculty of Business and Economics
EXAM CODES:
ETX9000 (First 7 questions are ETX1100 also)
TITLE OF PAPER:
Business and Economic Statistics
EXAM DURATION:
3 hours writing

MCD2080
Business Statistics
Equivalent to MU: ETX1100
Unit Outline
Prepared for Monash College by:
The Department of Econometrics and Business Statistics
Faculty of Business and Economics
Monash University
Produced and Published by:
Monash College Pty. Lt

MCD2080 Week 5
Bring Statistical tables to this lecture
Probability distributions for continuous variables
Textbook references:
Berenson et al Basic Business
Statistics 3, Chapter 6 Sections 6.16.2
1
Checklist for Introduction to Probability Distributions

Monash University
Semester 2 2012 Examination Period
EXAM CODE:
TITLE OF PAPER:
ETX 9000
BUSINESS AND ECONOMIC STATISTICS
EXAM DURATION:
180 minutes writing time
READING TIME
10 minutes
THIS PAPER IS FOR STUDENTS STUDYING AT: (office use only tick where a

Practice questions for ETX1100 & ETX9000
Semester 1, 2013
Question 1
One area strongly affected by the recent financial crisis was the American property market. In
2008, approximately 5% of the households in the Detroit metropolitan area were at some
stag

Monash University
Semester Two 2012 Examination Period
EXAM CODE:
ETX1100
TITLE OF PAPER:
BUSINESS STATISTICS
EXAM DURATION:
120 minutes writing time
READING TIME
10 minutes
THIS PAPER IS FOR STUDENTS STUDYING AT: (office use only tick where applicable)

Office Use Only
Monash University
Semester ONE Examination Period 2012
Faculty of Business and Economics
EXAM CODES:
ETX9000
TITLE OF PAPER:
Business and Economic Statistics
EXAM DURATION:
3 hours writing time
READING TIME:
10 minutes
THIS PAPER IS FOR ST

MCD2080: Solutions Week 4
1.
(a) In report bellow, fill up for missing words and select correct statements where
appropriate.
The mean amount spent by Female is $157.67, which is larger than the mean
amount spent by Male $148.38.
This holds true for Morni

MCD2080: Solutions Week 3
1.
(a) Calculate the mean, median and mode: 6, 7, 7
(b) Calculate the range, interquartile range, variance, standard deviation and coefficient
of variation: 12, 6, 16, 4, 66.67%
Interpret the IQR: The spread of the middle 50% of

MCD 2080: Solutions Week 2
1.
a. Fuel efficiency.
b. The fuel consumption of all taxis in the fleet.
c. The average fuel consumption (km/litre) for all the taxis.
d. The fuel consumption of the 50 taxis selected.
e. The average fuel consumption (km/litre)

Lecture Four
MCD2080
Business
Statistics
Please bring Statistical tables to this
lecture
2
MEASURING UNCERTAINTY
Probability I: Fundamentals of probability
Probability distribution for a discrete random
variable (general)
Probability II: Probability dist