Stine and Foster Question 16-43

Slides:



Advertisements
Similar presentations
Two Population Means Hypothesis Testing and Confidence Intervals For Differences in Proportions.
Advertisements

1 1 Slide © 2008 Thomson South-Western. All Rights Reserved Slides by JOHN LOUCKS St. Edward’s University.
1 1 Slide © 2009 Thomson South-Western. All Rights Reserved Slides by JOHN LOUCKS St. Edward’s University.
1 1 Slide © 2003 South-Western/Thomson Learning™ Slides Prepared by JOHN S. LOUCKS St. Edward’s University.
1 1 Slide STATISTICS FOR BUSINESS AND ECONOMICS Seventh Edition AndersonSweeneyWilliams Slides Prepared by John Loucks © 1999 ITP/South-Western College.
Chapter 9 Hypothesis Testing
1 1 Slide © 2008 Thomson South-Western. All Rights Reserved Chapter 9 Hypothesis Testing Developing Null and Alternative Hypotheses Developing Null and.
Business Statistics - QBM117
Hypothesis Testing Steps of a Statistical Significance Test. 1. Assumptions Type of data, form of population, method of sampling, sample size.
P-Values for Hypothesis Testing About  With  Known.
1 1 Slide © 2006 Thomson/South-Western Chapter 9 Hypothesis Testing Developing Null and Alternative Hypotheses Developing Null and Alternative Hypotheses.
Determining Statistical Significance
Nonparametrics and goodness of fit Petter Mostad
Hypothesis Testing with Two Samples
1 © Lecture note 3 Hypothesis Testing MAKE HYPOTHESIS ©
CHAPTER 2 Statistical Inference 2.1 Estimation  Confidence Interval Estimation for Mean and Proportion  Determining Sample Size 2.2 Hypothesis Testing:
Hypothesis testing is used to make decisions concerning the value of a parameter.
1 1 Slide © 2011 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole.
Means Tests Hypothesis Testing Assumptions Testing (Normality)
TESTING HYPOTHESES ABOUT PROPORTIONS CHAPTER 20. ESSENTIAL CONCEPTS Hypothesis testing involves proposing a model, then determining if the data we observe.
The Power of Moving Averages in Financial Markets By: Michael Viscuso.
1 1 Slide Slides Prepared by JOHN S. LOUCKS St. Edward’s University © 2002 South-Western/Thomson Learning.
1 1 Slide © 2008 Thomson South-Western. All Rights Reserved Slides by JOHN LOUCKS St. Edward’s University.
1 1 Slide IS 310 – Business Statistics IS 310 Business Statistics CSU Long Beach.
Hypothesis Testing of Proportions INCM 9102 Quantitative Methods.
1 Required Sample Size, Type II Error Probabilities Chapter 23 Inference for Means: Part 2.
 4. There are two possible decisions:  Conclude that there is enough evidence to support the alternative hypothesis (Reject H0)  Conclude that there.
Lecture 5 TtestsAbout Proportions STAT 3120 Statistical Methods I.
Hypothesis Testing with One Sample Chapter 7. § 7.1 Introduction to Hypothesis Testing.
1 CHAPTER 4 CHAPTER 4 WHAT IS A CONFIDENCE INTERVAL? WHAT IS A CONFIDENCE INTERVAL? confidence interval A confidence interval estimates a population parameter.
One-Sample Hypothesis Tests Chapter99 Logic of Hypothesis Testing Statistical Hypothesis Testing Testing a Mean: Known Population Variance Testing a Mean:
A significance test or hypothesis test is a procedure for comparing our data with a hypothesis whose truth we want to assess. The hypothesis is usually.
Tests of Significance: The Basics ESS chapter 15 © 2013 W.H. Freeman and Company.
The Idea of the Statistical Test. A statistical test evaluates the "fit" of a hypothesis to a sample.
CHAPTER 15: Tests of Significance The Basics ESSENTIAL STATISTICS Second Edition David S. Moore, William I. Notz, and Michael A. Fligner Lecture Presentation.
Lec. 19 – Hypothesis Testing: The Null and Types of Error.
Level of Significance Level of significance Your maximum allowable probability of making a type I error. – Denoted by , the lowercase Greek letter alpha.
Lecture 5 Tests About Proportions STAT 3120 Statistical Methods I.
Warm Up 1. Write the four steps in writing a confidence interval and how to check conditions (step 2) for means. 2. Write the four steps involved in test.
SWBAT: -Determine whether to use a one or two tailed test and calculate the necessary p-value -Make and interpret a decision based on the results of a.
Hypothesis Testing Chapter Hypothesis Testing  Developing Null and Alternative Hypotheses  Type I and Type II Errors  One-Tailed Tests About.
Ex St 801 Statistical Methods Part 2 Inference about a Single Population Mean (HYP)
QNT 351 Week 4 DQ 4 Think of an example of the use of one sample hypothesis testing at your workplace. How will you state the hypothesis as a Null and.
Stine and Foster: Hypothesis Testing
Slides by JOHN LOUCKS St. Edward’s University.
NONPARAMETRIC STATISTICS
Two sample Tests & Intervals on the Calculator
HW 11 Key.
Significance Test for the Difference of Two Proportions
STA 291 Spring 2010 Lecture 18 Dustin Lueker.
Math 4030 – 10b Inferences Concerning Variances: Hypothesis Testing
Chapter 9 Hypothesis Testing: Single Population
NULL HYPOTHESIS.
Week 11 Chapter 17. Testing Hypotheses about Proportions
Ch. 9 examples.
Sequential Analysis Team: The Authors 11/22/2018 Case 16 Example.
Sensation Park Entertainment Group
STATISTICS INFORMED DECISIONS USING DATA
Hypothesis Tests for Proportions
Hypothesis Testing.
Statistical Inference for Managers
STA 291 Spring 2008 Lecture 18 Dustin Lueker.
Power Section 9.7.
Chapter 11: Testing a Claim
Hypothesis Testing and Confidence Intervals
Chapter Outline Inferences About the Difference Between Two Population Means: s 1 and s 2 Known.
STA 291 Summer 2008 Lecture 18 Dustin Lueker.
Ch 11 實習 (2).
YOU HAVE REACHED THE FINAL OBJECTIVE OF THE COURSE
Statistical Test A test of significance is a formal procedure for comparing observed data with a claim (also called a hypothesis) whose truth we want to.
Presentation transcript:

Stine and Foster Question 16-43 Hotel Chain Stine and Foster Question 16-43

Problem Statement The management of a chain of hotels avoids intervening in the local management of its franchises unless problems become far too common to ignore. Management believes that solving the problems is better left to the local staff unless the measure of satisfaction drops below 33%. A survey of 80 guests who recently stayed in the franchise in St. Louis found that only 20% of the guests indicated that they would return to that hotel when next visiting the city. Should management intervene in the franchise in St. Louis?

Steps Determine Specify Sample Form Conclude Determine the conditions in which no action will be taken Specify Specify the null hypothesis Specify the alternative hypothesis Sample Sample and then use the resulting data to estimate the parameter of interest Form Form a test statistics Determine the p-value of the test statistic Conclude Conclude with the course of action