# Null hypothesis

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RESULT & OBSERVATION The hypothesis for statistical testing must be written as Null hypothesis (H0) and Alternate (Research) hypothesis (H1) form. H0 1= There is no significant relationship between body height, foot length and knee height in both the sexes. H1 1= There is relationship between body height, foot length and knee height and are significant in both the sexes. H0 2= Body height is equally estimated from both foot lengths and Knee height in both the sexes more accurately. H1 2= Body height is best and more accurately estimated from knee height in both the sexes than with both foot lengths or vice a versa. In present study comparison of…

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Exercise 7 (set 1) 1. What are three versions of the null hypothesis? The three versions of the null hypothesis are: (1) “the observed difference was created by sampling error”, (2) “there is no true difference between the two groups” and (3) “the true difference between the two groups is zero.” (Barker, 56-57) 2. Is the null hypothesis typically stated in social scientific research? Why/why not? The null hypothesis is not usually stated in social scientific research. Researchers rarely state…

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Hypothesis test How to find the sample size for analytical studies and experiments? State the null and alternative hypothesis. Choose the statistical test based on the type of predictor and outcome variables. Choose an appropriate effect size. Set type 1 (alpha) and type 2 (beta) error. Use the appropriate table to to look for the corresponding sample size. Basic Concepts Hypotheses: Null and Alternative hypotheses People often look into statistical relationship through the test of…

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Question 1 Null hypothesis The null hypothesis, which is symbolically expressed as H0, is a statement that indicates no difference between a parameter and a specific value or between two parameters. Alternative Hypothesis The alternative hypothesis, which is symbolically expressed as HA or H1, is a statement that indicates the presence of a difference between a parameter and a specific value or between two parameters. Decision Rules On testing the null hypothesis, two main decision rules are…

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Vanessa Kehdi November 8, 2017 Statistics 352 Lab Assignment 5 Problem 1: The null hypothesis is that there is no association between the political party affiliation and the opinion held of President Obama’s performance. The alternative hypothesis is that there is an association between the political party affiliation and the opinion held of President Obama’s performance. Based on the bar chart, there is an association between the political party and President Obama’s opinion because…

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Introduction The Effects of Oiled Wisconsin Fast Plants Seeds on the Rate of Germination In this lab report, I will discuss the relationship between oil and the rate of germination of seeds. My Null hypothesis states that oil will not effect the rate of germination of Wisconsin Fast Plant seeds. The purpose of this experiment is to test the Null hypothesis. The symptoms caused by the contamination with oil are countless and generally not specific. The same substance can induce different effects…

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The alternative hypothesis is the existing hypothesis that has already been proven or maintained as the true outcome. For instance, water is wet. This is the alternative hypothesis, which is also known as the maintained hypothesis. If a researcher would like to explore different possibilities, a new study will be conducted with a new hypothesis which would be quickly disproven. Of course water is wet, and any other hypothesis would be the null…

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areas of knowledge where questions should be objective. That should be the aim of the natural sciences and it is to a certain extent but then we also have human error occurring. The human error being the scientists and how they run labs and record data. The question is not neutral because scientists have that desire to want something that will describe the natural world. Scientist first come up with a hypothesis, which is supposed to be objective but since labs are carried out to find a…

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mind have some reality so I can begin to formulate a way to combat it. Plan of Investigation I plan on comparing the album sales of 6 different artists (three black and three white) as well as their Grammy accolades. I will use an x2 test for both categories as a way to determine if there is a significant dependence on race in terms of how many albums are sold by these artists and how many Grammys they win. The x2 test is a statistical test that two or more sample populations. It compares the…

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use of a hypothesis when conducting research. A hypothesis is an educated guess that can be proven, with either a positive or negative conclusion in the research. Knowing the difference between a null hypothesis and an alternative hypothesis allows researchers to plan their research accordantly. For instance, if a researcher is planning to research the relationship between two or more variables the alternative hypothesis approach would work best in conducting the research. However, if a…

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