Hypothesis Testing I Pat Obi What is a “Hypothesis?” A statement or claim about the value of a population parameter: μ‚ σ2‚ p Pat Obi‚ Purdue University Calumet 2 Decision Rule 1. x 0 Z s n Compare calculated Z value to Z value from Table (critical Z value) Reject H0 if calculated Z value lies in the rejection/significance region (i.e. region) ALTERNATIVELY: 2. Compare p-value to Reject H0 if p-value < Pat Obi‚ Purdue University Calumet 3 Two-Tail Test Ex: H0: 0
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The Grand Canyon is a beautiful place that is located in Arizona filled with nature and ancient stories. The Grand Canyon is valued for its combination of size‚ depth‚ and exposed layers of colorful rocks dating back to Precambrian times. There are a multiple stories of why the Grand Canyon was made. But only one story was correct. There lived a young man named Elijah Canyon‚ in the village of Big Springs. Elijah was a brave‚ intelligent‚ and a very subtle boy. Every morning‚ Elijah used to wake
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Difference in Competencies; ADN vs BSN Grand Canyon University Difference in Competencies; ADN vs BSN The definition of competency as described by Gurvis and Grey is “an individual’s actual performance in particular situation‚ described by how well the individual integrates knowledge‚ attitudes‚ skills and behavior in delivering care according to expectations”(Gurvis& Grey‚1995). The purpose of this paper is to describe the difference in competencies between the associate
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CHAPTER 8 Introduction to Hypothesis Testing 8.1 Inferential Statistics and Hypothesis Testing LEARNING OBJECTIVES 8.2 Four Steps to Hypothesis Testing After reading this chapter‚ you should be able to: 8.3 Hypothesis Testing and Sampling Distributions 8.4 Making a Decision: Types of Error 8.5 Testing a Research Hypothesis: Examples Using the z Test 8.6 Research in Focus: Directional Versus Nondirectional Tests 8.7 Measuring the Size
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Hypothesis testing I Kevin Soo Outline • • • • Theory and the research process What is a hypothesis? Hypothesis testing Statistical models Theory and the research process Theory • A belief – Can be true or false – P (belief) • A proposed/possible explanation for something – ‘Some students do poorly at statistics because they have less exposure to mathematics’ – ‘Women don’t date me because I’m ugly’ – ‘Manchester United lost the Premier League because they struggled with injury
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understanding of hypothesis testing. The textbook explained the aspects and steps of hypothesis testing in a legible fashion‚ while the video helped demonstrate a real-life application. I learned from the text that hypothesis testing is a “Procedure for deciding whether the outcome of a study (results from a sample) supports a particular theory or practical innovation (which is thought to apply to a population)” (Aron A.‚ Aron‚ E.‚ and Coups‚ 2011‚ p. 145). I also learned that hypothesis testing
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Grand Canyon Narrative “How are you feeling right now?” My father asked‚ I replied‚ “Excited.” This was in fact‚ an understatement. I had never seen or been to a natural reservation so highly known as the Grand Canyon. I have always been the type of person who enjoyed going camping or staying outside‚ appreciating the presence of nature. It was great news to hear. After weeks of planning‚ our family was on the road heading out to the Grand Canyon. After each hour‚ the lands we were crossing seemed
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HYPOTHESIS TESTING WHAT IS THIS HYPOTHESIS???? • In simple words it means a mere assumption or supposition to be proved of disproved. • But‚ for a researcher it is a formal question that he intends to resolve. • Example: I assume that 1) under stress and anxiety a person goes into depression. 2) It leads to aggressive behaviour. Eg. : Students who get better counselling in a university will show a greater increase in creativity than students who were not counselled. • So‚ the hypothesis
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The Grand Canyon National Park The Grand Canyon National Park‚ in it’s exceptional beauty‚ is special for many reasons. Located in Arizona‚ it is one of the Seven Wonders of the World. The canyon itself descends a mile into the Colorado Plateu. This area was home to many Native American tribes including the the Anasazi‚ dating as far back as 500 B.C.. In 600-700 A.D. the Coconino people showed up. The climate and various other factors forced both tribes out of the area and the Cerbat people
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Grand Canyon is located in north Arizona‚ the Grand Canyon is known throughout the world for its size and colorful landscape. It is said that Grand Canyon was formed over 17 million years ago and until recent year; it was only thought to be 4-6 million years old. Grand Canyon is over 270 miles long‚ up to 18 miles wide and 1 mile deep. After you have read how big Grand Canyon actually is‚ you may be wondering: How was it formed? And that is a very good question. The answer is quite difficult‚ but
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