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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Critical-Value Approach to Hypothesis Testing We often use inferential statistics to make decisions or judgments about the value of a parameter‚ such as a population mean. For example‚ we might need to decide whether the mean weight‚ μ‚ of all bags of pretzels packaged by a particular company differs from the advertised weight of 454 grams (g)‚ or we might want to determine whether the mean age‚ μ‚ of all cars in use has increased from the year 2000 mean of 9.0 years. One of the most commonly
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Ouestion (a) Sole Proprietorship Sole proprietorship is a business owned one person‚ who has full control of the business and how it is run. They also own all the assets of the business and any profit that it makes. In the same vein‚ they are also responsible for all the debts and liabilities the business accrues. There are lots advantages by being a sole trader. The first advantage is easy formation. The formation of sole proprietorship business is very easy and simple. No legal formalities
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and we discuss other solutions. When it comes to little things‚ like a person’s haircut‚ or what they’re wearing‚ honesty again depends on the type of friendship. Some people ask for advice on their appearance because they want the truth. So I give it to them. But others ask because they are fishing for a compliment. I’m not a fake person so I won’t lie‚ but I won’t tell them the truth either. eg/ One of my roommates dyed her hair and I didn’t like it. The first time I saw her after she got it
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Principle #1 Scrubbed persons function within a sterile field.2 The surgical team is made up of sterile and nonsterile members. Sterile members or "scrubbed" personnel work directly in the surgical field while the nonsterile members work in the periphery of the sterile surgical field. All surgical team members wear scrub attire. In addition to scrub attire‚ scrubbed persons must wear a sterile surgical gown‚ mask‚ and gloves within the sterile field to establish bacterial barriers.2‚4 These barriers
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and in a range of situations. Within my own particular context‚ the teaching of Criminology‚ is considered as being delivered mainly in an institutional based environment. However increasingly teaching Criminology now includes the development of distance‚ or on line‚ learning. I have also had experience of delivering training in community based learning events‚ which is an area showing potential for further development. Within these environments it is essential that I‚ the teacher‚ am able to
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In our modern word today‚ there is transport of choices for us. Although people do enjoy the convenience and privacy of traveling in their own private vehicles‚ in my opinion they may choose public transports. Overall‚ we are able to recognize its huge benefits such as safety‚ facility and familiarize with environment‚ even in some cases these vehicles also assist us moving faster than others do. Daily‚ if we spend a few minute to travel around the world by Medias‚ we will be able to
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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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Test of Hypothesis – Large Sample Test Critical Value (Zx) | Level of Significance (x) | | 1% | 5% | Two tailed test | Z = 2.58 | Z = 1.96 | One tailed test | Z = 2.33 | Z = 1.64 | Q. Z= X- μ σ√n = x- μS.EX The mean height of a random sample of 100 students is 64” and standard deviation is 3”. Test the statement that the mean height of population is 67” at 5% level of significance. Solution: We are given n = 100
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Chapter-11 Testing of Hypothesis: (Non-parametric Tests) Chapter-11: Testing of Hypothesis - (Non-parametric Tests) 2 11.1. Chi - square ( χ )Test / Distribution 2 11.1.1. Meaning of Chi - square ( χ )Test 2 11.1.2. Characteristics of Chi - square ( χ )Test 2 11.2. Types of Chi - square ( χ )Test / Distribution 2 11.2.1. Chi - square ( χ )Test for Population Variance 2 11.2.2. Chi - square ( χ )Test for Goodness-of-Fit 2 11.2.3. Chi - square ( χ )Test or Independence
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