WATER CONSUMPTION IN 1,000 Gallons
Extra Notes Week3
Grouped frequency tables and the
mean and standard deviation
THE MEAN OF GROUPED DATA
The mean of a sample of data organized in a
frequency distri
Solutions to Sample Final Exam
1304AFE Business Statistics
QUESTION 1 ( 13 marks)
A
a.
Given: n = 15; ; S = 2.4
is unknown and the population distribution is normally distributed (Case 3).
95% CI for
EXAMPLE 7.1: Calculating Normal Probabilities
Source: Excel textbook, page 102.
GIVEN: population mean = 2.5, population sd = 0.3
TASK 1
P(X>3) = ?
Answer: Use normdist function. Remember: normdist ca
SOLUTIONS
Practice Questions for Final Exam (QIBT1304 AFE)
Topics tested in the exam:
Hypothesis Test
Simple Linear Regression and Correlation
Multiple Regressions
Index Numbers
Any materials in
Example 3.1: Drawing Histogram from raw data
Source: Excel Textbook, page 27
The results from a statistics exam are as follows:
Perform the following tasks:
Construct a frequency Histogram for the exa
EXAMPLE 11.1, Excel textbook, p.160
Hypothesis Test Case 1(Testing hypotheses about population mean when sigma is known)  Left Tail Test
In Excel, hypothesis testing can be efficiently performed usin
Excel textbook, Example 13.1, p.229
Simple Linear Regression
Data below exhibits, for 8 delicatessens, the annual profit per dollar of sales (measured in cents) (Y), and the number of employees per st
PASS Session 6
Question 1:
A toy manufacturer takes a sample of toys to find out how many defects to
expect. The manufacturer has decided to increase the size of
Sample Final Exam
1304AFE Business Statistics
The actual final exam consists of 4 questions (Total of 55 marks):
Question 1 13 marks
Question 2 13 marks
Question 3 18 marks
Question 4 11 marks
Content
1304AFE BUSINESS STATISTICS
COMPUTING EXAM  worth 15%
Instructions:
50 minutes.
During computer lab classes in week 13.
All answers are to be written on the computer test itself with spaces
provid
SAMPLE 1304AFE MIDSEMESTER EXAMINATION
For exam scheduled on:
DATE: Saturday 20 September 2014
TIME: PLEASE CHECK [email protected] WEBSITE
VENUE: VARIOUS BY SURNAME CHECK [email protected] WEBSITE
TIME ALLOWED: 1 hour 30 minut
SOLUTIONS TO SAMPLE MID SEMESTER EXAM
(marked with an Xsome questions also have extra explanation at the end)
Question 1
Do you believe the Government should introduce a carbon tax? Yes
No
The data p
EXAMPLE 9.1, Excel textbook, p.139
CASE 1: Constructing confidence intervals for pop'n mean when pop'n standard deviation is given
Given:
xbar
sigma
n
7.2
5
240
Task: Estimate the population mean with
Example 3.2: Drawing Histogram from a frequency distribution
Source: Excel textbook, page 36
Frequency Distribution of Telephone Call Durations
Class Intervals
Frequency
2 to 5
5 to 8
8 to 11
11 to 14
1304AFE  WEEK 4 LECTURE EXAMPLES
Example 1:
The weight of each 32g chocolate bar is
normally distributed with a mean of 32.2 g and a
standard deviation of 0.3 g.
a) Find the probability that, if a cu
1304AFE

LECTURE 3 EXAMPLES
1. The heights of children two years old are normally distributed with a mean of 80 cm and a
standard deviation of 3.6 cm. Find the probability that the height of a two ye
Semester 2, 2013
1304AFE Exam I Information Sheet
Exam 1 Information Sheet
When & Where & What to do if you miss it:
Conducted in week 4 during your enrolled workshop class. You may not
attend the wor
Example 3.1: Drawing Histogram from raw data
Source: Excel Textbook, page 27
The results from a statistics exam are as follows:
75
66
77
66
64
73
91
65
59
86
61
86
61
58
70
77
80
58
94
78
62
79
83
54