EIA1006 Statistics II
?1
Tutorial 3
1
Any correction should be notified to [email protected]
Question 1
We use the t distribution to develop the confidence interval
estimate for the mean when t
UNIVERSITI MALAYA _
UNIVERSITY OF MALA YA
PEPERIKSAAN IJAZAH SARJANA MUDA EKONOMI
EXAMINATION FOR THE DEGREE OF BACHELOR OF ECONOMICS
SESI AKADEMIK 2016/2017 1 SEMES
ACADEMIC SESSION 2016/2017 : SEMES
EIA1006 Statistics II
?1
Tutorial 4
1
Any correction should be notified to [email protected]
Question 1
The difference between a onetail test and a twotail test:
I
When using a twotailed tes
EIA1006 STATISTICS II
TUTORIAL 3
(1) What is the difference between a onetail test and a twotail test?
(2) In a onetail hypothesis test where you reject H0 only in the upper tail, what
is the criti
EIA1006 STATISTICS II
TUTORIAL 2
(1) Why is the sample mean an unbiased estimator of the population mean?
(2) Why does the standard error of the mean decrease as the sample size, n,
increases?
(3) An
EIA1006 STATISTICS II
TUTORIAL 3
(1) When do you use the t distribution to develop the confidence interval estimate for the mean?
(2) Why is it true that for a given sample size, n, an increase in con
UNIVERSITI MALAYA
UNIVERSITY OF MALA YA
PEPERIKSAAN IJAZAH SARJANA MUDA EKONOMI
EXAMINATION FOR THE DEGREE OF BACHELOR OF ECONOMICS
SESI AKADEMIK 2015/2016 : SEMESTER 
ACADEMIC SESSION 2015/2016 . SE
UNIVERSITI MALAYA
UNIVERSITY OF MALA YA
PEPERIKSAAN IJAZAH SARJANA MUDA EKONOMI
EXAMINATION FOR THE DEGREE OF BACHELOR OF ECONOMICS
SESI AKADEMIK 2015/2016 : SEMESTER ll
ACADEMIC SESSION 2015/2016 : S
UNIVERSITI MALAYA
UNIVERSITY OF MALA YA
PEPERIKSAAN IJAZAH SARJANA MUDA EKONOMI
EXAMINATION FOR THE DEGREE OF BACHELOR OF ECONOMICS
SESI AKADEMIK 2016/2017 : SEMESTER I
ACADEMIC SESSION 2016/2017 : SE
EIA1006 STATISTICS II
TUTORIAL 1
(1) Given a standardized normal distribution (with a mean of 0 and a standard
deviation of 1), what is the probability that
(a) Z is less than 1.57?
(b) Z is greater t
STA1103
Exercise 7 (Chapter 9)
1.
A city expressway using four lanes in each direction was studied to see whether
drivers preferred to drive on the inside lanes. A total of 1000 automobiles was
observ
CHAPTER 6: SAMPLING DISTRIBUTIONS
Sampling and nonsampling errors
Even if a sampling process were completely free of bias, there would still be
fluctuations due to naturally occurrences of random var
STA1103
Exercise 6 (Chapter 7 & 8)
1.
An electrical firm manufactures light bulbs that have a lifetime that is approximately
normally distributed with a mean of 8000 hours and a standard deviation of
CHAPTER
5:
CONTINUOUS
RANDOM
VARIABLES AND NORMAL DISTRIBUTION
Continuous Probability Distribution or Probability Density Functions, f
The graphic form of the probability distribution for a continuous
STA1103
Exercise 8 (Chapter 10)
1.
(a)
(b)
Average weekly consumption
Average number of
of cans of beer
cigarettes smoked per day
18
0
0
0
3
2
9
15
2
6
0
3
4
9
2
0
15
25
9
16
Calculate the value of th
STA1103
Exercise 9 (Chapter 11)
1.
Shown in the table below are the prices of a 500g packet of frozen peas, 1 liter
of super grade petrol and a 1 kg leg of lamb in Brisbane for each of the June quarte
CHAPTER 3:
MEASURES
NUMERICAL
DESCRIPTIVE
Measures of central tendency
A.
(i)
e.g.1
(ii)
Mean, x
Arithmetic mean = the sum of all the observed values divided by the total number
of observations.
x
x
n
CHAPTER 4: PROBABILITY
Terminology and definitions
A statistical experiment is one in which there are number of possible outcomes and
we have no way of predicting which outcome will actually occur. So
CHAPTER 1: INTRODUCTION TO STATISTICS

(a)
(b)
(c)
(d)
By descriptive statistics we mean any treatment of data which is designed to
summarize or describe some of their important features without atte
CHAPTER 7: ESTIMATION OF THE MEAN AND
PROPORTION
Statistics and Parameters
A parameter is a numerical descriptive measure of a population. Because it is based
on the observations in the population, it
STA1103
Exercise 2 (Chapter 3)
1. The mileage read from the odometers of a sample of automobiles which were lubricated
at an automobile service station are:
Thousands of miles
09
10 19
20 29
30 39
40
Assignment 1
Absolutely not later than 12:00 pm (15/09/2015). Please write down your section on the
answer script.
1.
The prices of a random sample of 30 Statistics books at INTI International Univers
Assignment 2
Absolutely not later than 12:00 pm (23/09/2015). Please write down your section on the
answer script. Thank you.
1.
A random sample of 50 students from INTI DIA program was taken, and the
STA1103
Exercise 3 (Chapter 4)
1. A marketing survey for a large department store classified the stores customers according to
whether they were male or female and according to their residence, suburb
STA1103
Exercise 5 (Chapter 6)
1.
An electrical firm manufactures lights bulbs that have a length of life that is
approximately normally distributed with a standard deviation of 40 hours. If a sample
Assignment 3
Absolutely not later than 12:00 pm (04/11/2015). Please write down your section on the
answer script. Thank you.
1.
The quantity control manager of a factory wishes to estimate the averag
CAREER FOR APPLIED
MATHEMATICS
What is
Applied
Mathematics
?
People that appreciate the logical foundations, the precise formulation
of the concepts and the justification of the results (proofs). They
UECM2093/ UECM2043 OPERATIONS RESEARCH I
Assignment  May 2016
Instruction to Candidates:
1.
2.
3.
4.
Q1.
Answer ALL 5 questions.
Submit the assignment by 31/8/2014 (Wednesday) 5:00 pm. (Put your assi