Hypothesis testing begins with the assumption that randomization is used to collect quantitative data about the sample and that the distribution of this data has a normal shape. Significance tests state two explanations‚ or hypotheses‚ about a parameter. One‚ called the null hypothesis‚ states that the parameter equals some value (usually 0). The other‚ called the alternative hypothesis‚ states that the parameter is greater than‚ less than or (not) equal to the value stated in the null hypothesis
Premium Statistical hypothesis testing Statistics Null hypothesis
Chapter 4. Hypothesis testing The main aim of the module is to familiarize students with the theoretical knowledge of hypothesis testing and then train them in applying theory to economic practice. After completing this module‚ students will be familiar with: the procedure of hypothesis testing; the possible outcomes in hypothesis testing; the difference between significant and nonsignificant statistical findings. After completing this module‚ students will be able to:
Premium Statistical hypothesis testing Null hypothesis Statistics
Quantitative Techniques Lab 5 (Topic 3: Hypothesis Testing) ------------------------------------------------- Procedure for Hypothesis Testing Step 1: Formulate the null and alternative hypothesis. Draw the one-tail or two- tail test diagram. Step 2: Specify the level of significance. Determine the critical value (s). Step 3: Identify the test statistics to be used and calculate it. Step 4: Draw the conclusion. Formulae List Hypothesis Testing Test Statistics for Single Mean
Premium Arithmetic mean Statistical hypothesis testing Statistics
Techniques of Hypothesis Testing Dr. Scott Stevens Objectives When you finish reading this article‚ you should be able to • Determine the appropriate null and alternate hypotheses for your hypothesis test • Determine if your test is one- or two- tailed • Conduct an appropriate test using Excel in any of three ways o Using the critical score approach o Using the non-rejection region approach (for a two-tailed test) o Using the P-value approach
Premium Scientific method Research Quantitative research
Hypothesis Testing Paper Previously a group of friends compared the average temperature for the 15 days in each of the 2004 and 2005 Christmas holiday pubic school vacations to determine which holiday was colder. Secondary research retrieved from the National Oceanic and Atmospheric Administration ’s (NOAA) National Weather Service website provided climatic data on a daily basis for each day of the periods under investigation. Daily average temperature for each of the 15-day holiday vacation
Premium Null hypothesis Statistical hypothesis testing Type I and type II errors
situation is qualitative technique NOT used? A. Focus of the research is on meaning s and attitudes B. The situation calls for exploratory theory building C. Interaction between members of a group is of interest D. The situation calls for theory testing 3. Which of the followings is NOT a qualitative data collection? A. Questionnaire – based survey (quantitative) B. In-depth interview C. Analysis of texts D. Participant observation 4. Which format can a questionnaire – based survey take
Premium Scientific method Qualitative research
Precipitation Hypothesis Testing Paper Learning Team One Research and Evaluation II – RES 342 University of Phoenix Precipitation Hypothesis Testing Learning team one will test if there is more precipitation in the three months of the spring in 2006 or is it greater than or equal to the three months in the winter in Rockville‚ which is located in Montgomery County‚ Maryland. We will look at the validity of the local average precipitation (rainfall) during the months of December
Premium Null hypothesis Statistical hypothesis testing Type I and type II errors
steps of hypothesis testing and the 5% significance level (i.e. alpha = .05)‚ does showing the film change students’ attitudes towards the chronically mentally ill? • What does it mean to set alpha at .05? Alpha at .05 means there is a .05 probability or 5% chance of committing a Type I error‚ which means that we have rejected our null hypothesis and found support for our alternate hypothesis when‚ in fact‚ the null hypothesis was true. • What is your null hypothesis? Alternate hypothesis? Ho :
Premium Statistical hypothesis testing Null hypothesis
A NOTE ON HYPOTHESIS TESTING |Significance Level |One-Sided Test |Two-Sided Test | |0.10 |1.285 |1.645 | |0.05 |1.645 |1.960 | |0.01 |2.33 |2.575 | Part A. Single-Sample
Premium Variance Statistical hypothesis testing Sample size
if your ring size falls between two of the above standard manufacturing size‚ you will take the bigger of the two.) 2. (8 points) According to a study by my PseudoScientific Consulting‚ the time interval between Atlantic hurricane of category 4 has a mean of 456 days and a standard deviation of 123 days. Suppose that you observe a sample of five (5) time intervals between successive category 4 hurricanes. a. On average‚ what would you expect to be the mean of the five (5) time intervals
Premium Statistical hypothesis testing Null hypothesis Standard deviation