Chapter 12
Hypothesis testing:
Describing a single population
2
Introduction
The purpose of hypothesis testing is to
determine whether there is enough statistical
evidence in favour of a certain belief about a
parameter.
3
Introduction
Examples
In a crim

Chapter 12
Hypothesis testing:
Describing a single population
2
Introduction
The purpose of hypothesis testing is to
determine whether there is enough statistical
evidence in favour of a certain belief about a
parameter.
3
Introduction
Examples
In a crim

Chapter 14
Simple linear regression and
correlation
Introduction
Our problem objective is to analyse the
relationship
between
numerical
variables;
regression analysis is the first tool we will study.
Regression analysis is used to predict the value of
one

Chapter 11
Estimation:
Describing a single population
Where We Have Been
Chapters 7 and 8:
Binomial, Poisson, normal, and exponential
distributions allow us to make probability
statements about X (a member of the
population).
To do so we need the populati

Solutions for Sample Exam 1
QUESTION 1
A particular cylinder manufacturing company produces cylinders with a nominal
diameter of 30mm. The supervisor of the companys main factory has noted that
the diameter of these cylinders is a normally distributed ran

1
Solutions for Sample Exam 2
.Question 1 [3+4+3 = 10 marks]
1. A credit card companys records show that 5% of their customers fail to pay the minimum
repayment on their credit card each month. The companys records also show that among
their customers in

Solutions for Sample Exam 3
Question 1
A television cable company receives numerous phone calls throughout the
day from customers reporting service problems as well as from potential
customers. Most of these callers are put on hold until an operator is
av