INTRODUCTION
The objective of this assignment is to study the students opinions on their music
preferences among the UCSI undergraduate students in UCSI University. The group members
are assigned to distribute 50 questionnaires titled Survey BB113 Assignm
Tutorial 7 (Review)
1.
An American Society of Investors survey found 30 percent of individual investors have used a
discount broker. In a random sample of nine individuals, what is the probability:
a.
Exactly two of the sampled individuals have used a dis
BB113 Statistics and Its Application
Tutorial 8
Tutorial 8 Two Sample Tests
Question 1
In a study, drinking-water samples were taken from Rural and Urban locations. The
recorded ph values are given in the table below:
Rural
Urban
6.3
6.4
5.9
6.2
6.6
6.4
7
BB113 Statistics and Its Application
Tutorial 4
Tutorial 4
Discrete Probability Distribution
1.
The following table contains the probability distribution for the number of traffic
accidents daily in a small city:
Number of Accidents Daily (X)
P(X = xi)
0
BB113 Statistics and Its Application
Tutorial 3
Tutorial 3 - Basic Probability
1.
Two coins are tossed.
(a) Give an example of a simple event.
(b) Give an example of a joint event.
(c) What is the complement of a head on the first toss?
2. Consider the fo
BB113 Statistics and Its Application
Tutorial 2
Tutorial 2 - Numerical Descriptive Measures
1. The following set of data is from a sample of n = 7:
12
7
4
9
0
7
3
(a) Compute the mean, median and mode.
(b) Compute the range, variance and standard deviatio
BB113 Statistics and Its Application
Tutorial 9
Tutorial 9 - Analysis of Variance
1.
An experiment has a single factor with five groups and seven values in each group.
(a) How many degrees of freedom are there in determining the among-group variation?
(b)
BB113 Statistics and Its Application
Tutorial 11
Tutorial 11 Chi-Square Tests
1.
Determine the critical value of 2 with 1 degree of freedom in each of the following
circumstances:
(a) = 0.05
(b) = 0.025
(c) = 0.01
2.
Use the following contingency table:
A
BB113 Statistics and Its Application
Tutorial 5
Tutorial 5 Continuous Probability Distribution
1. Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1,
as in Table E.2), what is the probability that
(a) Z is less than 1
BB113 Statistics and Its Application
Tutorial 7
Tutorial 7 Fundamental of Hypothesis Testing One Sample Tests
One-Sample Tests
1.
If you use a 0.05 level of significance in a (two-tail) hypothesis test, what will you decide
if ZSTAT = 0.76?
2.
If you use
BB113 Statistics and Its Application
Tutorial 10
Tutorial 10 Simple Linear Regression
1.
Fitting a straight line to a set of data yields the following prediction line:
Yi 2 5 X i
(a) Interpret the meaning of the Y intercept, b0.
(b) Interpret the meaning
BB113 Statistics and Its Application
Tutorial 6
Tutorial 6 Sampling+ Confidence Interval Estimation
1. The mean wage per hour for all 4000 employees who work at large company is
RM30.00, and the variance is 16. Let x be the mean wage per hour for a random