Cover Page. Research Project-2: BUS1BAN. Teacher’s Name

Cover Page
Research Project-2: BUS1BAN
Teacher’s
Name
Workshop
Details
(Time, day,
room)
Students ID
Number
Students Name Student
contribution* (%)
e.g. 50% means
the student will
receive 50% of the
marks awarded
Students
Signature
*All group members are to exert an equal amount of effort on all questions of
the assignment. Students should not divide sections. If a student has
contributed to only some sections, the contribution of the student should be
equal to the marks it carries. A student with less than 100% contribution will
receive marks proportional to their contribution.
1

An insight into market share and usage of
mobile phones by students at La Trobe
University
Note: Students would continue to be the part of the
same group as were for research project-1 and would
be utilising the data from the same random sample
that they have already submitted earlier.
Inferential Statistics
1. Point Estimate and Confidence Interval: (20 marks)
A. Suppose you randomly select a student from
BUS1BAN class, how likely is it that the student
selected will be: (5 marks)
 A female;
 A male;
 An IPhone user;
 Other smart phone users.
Proportion (
^p)
Female Students 0.52
Male Students 0.48
IPhone Users 0.76
Other Smart Phone
Users
0.07
B. Estimate 95% confidence interval of the proportion of
female students and the proportion of Other Smart
Phone User. Show the confidence intervals graphically,
and interpret your results. (You must show the formula
and show working by putting values in the formula
accordingly): (5 marks)
i.Female Students (2.5 marks)
2

95% confidence interval for the proportion of female
students refer to the range or interval of values through
which we can be 95% sure that true proportion of female
students is within (Shao, 2018). In this case this range of
values is between 0.44 and 0.6. Therefore, we are 95%
confident that the true proportion of female students is
between 0.44 and 0.6. The plot is as follows:
ii.Other Smart Phone Users (2.5 marks)
3