Shalini Prasad Ajith Rao Eeshoo Rehani DEVELOPING HYPOTHESES & RESEARCH QUESTIONS 500 RESEARCH METHODS SEPTEMBER 18TH 2001 DEVELOPING HYPOTHESIS AND RESEARCH QUESTIONS DEVELOPING HYPOTHESES & RESEARCH QUESTIONS Introduction Processes involved before formulating the hypotheses. Definition Nature of Hypothesis Types How to formulate a Hypotheses in Quantitative Research Qualitative Research Testing and Errors in Hypotheses Summary DEVELOPING HYPOTHESES & RESEARCH QUESTIONS The
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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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Statement: Is breastfeeding better for the mother’s body as well for the baby’s body? Hypothesis: That breastfeeding is better then formula for the baby’s health and development. Also‚ breastfeeding helps the mother with losing postpartum weight and bonding with her new baby. Results: Breast milk is the most complete form of nutrition for infants. Human milk contains just the right amount of fatty acids‚ lactose‚ water‚ and amino acids for human digestion‚ brain development‚ and growth. (Williams
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What is the difference between hypothesis and law? A hypothesis is a statement‚ put forth on the basis of reasoning‚ about the things that are being studied. A hypothesis is an educated guess based on past scientific studies and previous experiments. It is not just a random guess. Observation is followed by a hypothesis. For example ‘Plants need sunlight to grow’ can be a hypothesis. It is formulated by taking into account all the observations that are know about the phenomenon under investigation
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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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Release date: 27 April 2014 Submission date: 9 May 2014 TUTORIAL ON HYPOTHESIS TESTING (1) Basic Concept 1. State the null and alternative hypothesis for each conjecture : a. A researcher thinks that if expectant mothers use vitamin pills‚ the birth weight of the babies will increase. The average birth weight of the population is 3.0kg. b. An engineer hypothesizes that the mean number of defects can be decreased in a manufacturing process of compact disks by using robots instead of humans
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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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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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{text:bookmark-start} Hypothesis Analysis {text:bookmark-end} Scientific Method is a process that is the basis for scientific inquiry. The scientific method follows a series of steps: identify a problem you would like to solve‚ formulate a hypothesis‚ test the hypothesis‚ collect and analyze the date‚ and make conclusions {text:bookmark-start} (“LabWrite Resources“‚ n.d.) {text:bookmark-end} We will cover and give examples of how the scientific method works throughout this paper. Let us start
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research hypothesis‚ the alternative hypothesis (H1) hypothesized that internalized racism regress significantly on violence‚ even when accounting for the effect of Self-attitude‚ uncomfortable with neighborhood and Age. In other side the Null hypothesis (H0(1)) hypothesized that internalized racism do not regress significantly on violence‚ even when accounting for the effect of Self-attitude‚ uncomfortable with neighborhood and Age. The study reject the Null hypothesis. To test this hypothesis‚ the
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