Chapter 20: Inference on Proportions (Part 2)
A: Test of Hypotheses on p Given a dichotomous population for A and A'. Suppose the proportion of As is p which is unknown. We take a (large) sample of size n, and count the number of As in the sample. Let thi
Chapter17: ThetCoefficientandthetTest
Introduction Intheprevioustwochapters,westudiedinferenceson when (i) the population is normal and (ii) the standard deviation is known. However, the assumption that is known is NOT practical as we do not even know the
Chapter 16: Normal Test of Hypotheses on
A. General Concepts When we carry out a research project or experiment, we may have reservations about the validity of certain existing theories, or facts, or beliefs. We then collect data in the hope of establish
Chapter 15: The Normal Sampling Theorem and Its First Four Applications
A.
Revision of Point Estimations
The three main areas of statistical inference are:
(i) Point estimation (ii) Interval estimation (iii) Test of Hypotheses
In chapter 14 , we dealt wit
Chapter 13 Elementary Decision Making
We make decisions from time to time. Some decisions are big, such as which faculty to join, what job to take up, whom to marry. Some decisions are minor, such as which shirt to wear, what transport to take, which piec
Topic(s) Culture
Issue(s)
Theories Applied in Analysis
Solution - Shake the old culture by job transfers, rotation and terminations. Create new stories, rituals, symbols and jargons. Promote and support employees who adopt the new culture. - Better commun
Topic(s) Culture
Issue(s) 1. Benefits of the 'HP way' 2. Downside of the 'HP way'
Evidence High corporate integrity and employee loyalty. HP had lost its aggressiveness and growth was slowing down as the company became a bureaucracy of entitlement and con
Chapter 11: Applications of Binomial Probabilities
For repeated, independent, experiments with just two outcomes, success and failure, where P (success) = p and P (failure) = q = 1-p, the probability of gaining x successes out of n trials is
P( X = x) = (
Assignment 4 Statistics Creating Writing Assignment. BONUS 10 Marks given for submission ON or BEFORE Friday 18/3/2011. Otherwise due in by 21/4/2011. Submit Ass 4 in your usual assignment box. It will be marked by Gabrielle.
To raise the interest of stud
THE UNIVERSITY OF HONG KONG DEPARTMENT OF STATISTICS AND ACTUARIAL SCIENCE STAT 0301 Elementary Statistical Methods Assignment 3 (No need to hand in. Do all in preparation for the class test 9/3/2011.)
*1. Alan participates in an athletics competition. Th
Chapter 9: Some Other Points about Normal Distributions
A: Prediction intervals Example 1: The daily sales volume of a small department store has a N(87, 5) distribution where the monetary unit is in $1000. Predict, with 95% probability, tomorrows sales v
Chapter 8 : Chapter Applications of the Normal Distribution Applications
Thenormaldistributionarisesfromaverynatural,normalsituation,suchas productquality. Verymanyothercharacteristics,suchasI.Q;bodyweight,bodyheight,flight time,monthlyrecurrentexpenses,e
Chapter 7 : The Normal Distribution
The normal distribution is the main character of statistics. It appears frequently. It starts with a study of errors.
Suppose you are a manufacturer. You set a quality goal, (=20 cm, say), for your product, get everythi
Chapter 6 :Some techniques of Calculation Chapter A: Tricks for 50FH
Example1: Find and x f 3
for the data set:
7 4 2 4
-8.3 6.5 12.4 7.1 -3.9 Total
Solution: ON MODE 3 COMP MODE SD ON
- 8.3 SHIFT ; 3 DT7.1 SHIFT ; 2 DT 8.3 - 3 .9 SHIFT ; 4 DT .9 SHIFT S
Chapter 4: Other points about Standard Deviation
A: Classification of performance For data set A, 15.2, 9.2 6.7, 12.4, is 12.8. 20.5,
Three deviations, 2.4, -3.6, and -0.4 (i.e. 60%) are small, and two deviations , -6.1, 7.7 (i.e. 40%) are large. We can s
Chapter 3: Chapter Measures of Variability Measures
Variability, dispersion and volatility are Variability, treated as synonyms. treated A: The Range Example 1: Find the range for each of the Find sets of data for Company A and Company B from Chapter 2 Ex