Hypothesis Testing College Essays Samples For Students

About the paper

The paper is commissioned to delineate the linear and log-linear multiple regression model where the dependent variable, earnings per hour, will be regressed against two independent variables, education and experience. As part of this analysis, we will cite multiple journal articles, books and other related sources to learn more about the regression analysis and how the statisticians perform the data analysis these days.
Both the regression models, i.e. linear and log-linear multiple regression will be performed in excel and the output will be attached in the appendix section of the paper. In addition, we will also test the significance ...

Introduction

Statistical hypothesis testing attempts to answer the following questions: whether the null hypothesis is true, if there any extreme results which are favorable to the alternative hypothesis and what is the probability of getting the results observed?
The current paper aims to analyze whether the assumption that was made is true with the help of the statistical methodology of hypothesis testing.

It is important to mention that the principles of the hypothesis testing do not give a logical proof of its correctness. The results obtained from hypothesis testing can be considered a statement which is credible enough and does not ...

In the past, people lived in towns, and traveling and communication with the world were complicated. Therefore, people had little or any choice of food, goods, medicine, leisure activities, or job. The XXI century is characterized by the fast-paced development of communication, technologies, and transportation. As a result, people can meet, communicate, travel, and even run business with partners who live on the other side of the globe. Therefore, the volume of information and the number of choices which people have to deal with have increased. People have to make decisions and choose every day. In the world of ...

Capstone Project

Executive Summary
The hypothetical idea which has been chosen for this analysis is the establishment of a Bar BQ restaurant in an area, in which we have asked number of questions from the respondents to get an idea about their choice, and what sort of products they are intending to have in the market with us. We have found that age plays a dominating role in having the choice of foods, and it is also found that the stance of the company is very essential as far as managing the productivity is concerned.

Introduction

Business Statistics is an important thing, and ...

In every Business or industry, a group of experts is dedicated to doing business research. This business research helps the managers of the company to forecast sales, recognize trends, earn more profits, etc. On the other hand, it also helps them to identify if any corporate practices or metrics are not up to their standards.
Hypothesis testing is a way to find out whether a particular theory is correct. Often managers order the team of business researchers to carryout hypothesis testing after which important decisions of the company are made. Although hypothesis testing does not remove the uncertainties of the managers ...

Analysis of Hypothesis Testing

Analysis of Hypothesis Testing
This paper will analyze hypothesis testing in the article titled “A Test of Learned Industriousness in the Physical Activity Domain” which appears in the International Journal of Psychological Studies. This article explores the relationship between the level of industriousness in an individual and the degree to which the individual was rewarded for intense effort before the activity (Bustamante et al. 2014). The key research question for this study is as follows: What is the relationship between reward of intense effort and persistence at a subsequent physical or mental task? Based on this research question, the ...

This chapter introduces the need occasioning by a theoretical framework after a literature review. An issue I found interesting is on how the theoretic framework serves as the basis of the hypothesis developed by the research. To commence, a theoretical framework is explained as the belief an individual holds on the relationship between phenomena. The explanation forwarded by the individual on how these phenomena are related is the theory. The relationship and the theory have to be in agreement with previous research carried out in the problem area. Building a theoretical framework, therefore, includes the process of introducing variables, developing a model that describes ...

Functions of Statistics

Firstly, statistics is used to present facts in a simplistic manner. This makes statements more convincing and logical as compared to mere description. Secondly, statistics is used to reduce complexities associated with raw data enabling the readers draw interpretations and inferences. There are various statistical measures that are used to make raw data simple and intelligible (LeBlanc, 2004). Examples are; graphs, dispersions, averages, regressions, correlation and kurtosis. Thirdly, statistics facilitates comparison. Comparisons are important when the user of a given data set draw conclusions between two groups or the past and present. Statistical devices such as ratios, averages and coefficients are ...

Many researchers in the field of psychology have investigated the link between television and obesity in both children and adults. It has been hypothesized that watching television leads to obesity in multiple ways. Individuals have replaced physical activity with watching television while subsequently increasing unhealthy snacking habits and reducing sleep. According Epstein Valoski, Vara, et al (1995), trials designed to reduce children's TV use have found improvements in body mass index (BMI), body fat, and other inter-correlated measures (http://www.hsph.harvard.edu/obesity-prevention-source/obesity-causes/television-and-sedentary-behavior-and-obesity/).
There is also evidence that reducing adult's hours watching television have reduced obesity and interrelatedness measures. According to Otten, ...

“At any given point of time an increase in the emotional intelligence of a person will lead to an increase in psychological wellbeing.” This is the hypothesis which is derived and I chose emotional intelligence as my independent variable (IV) due to the cause effect the influence on psychological wellbeing my dependent variable (DV) will have for the outcome, what will happen. The relation between the above two and the dependability of variables make this a null hypothesis.

In the present scenario we will basically take the probability sampling as considering the hypothesis, there is a possibility of each member to be a ...

Introduction

Statistics is a branch of mathematics, aimed at collecting and analyzing data via different methods such as analysis of variance, kurtosis, skewness or regression analysis. Nowadays, statistics helps processing data with a help of creating various charts that in turn help visualizing complex data sets. There are two major types of statistics, descriptive statistics and inferential statistics. Descriptive and inferential statistics require proper hypothesis formation and thus proper selection of the statistical tests that in turn have to be analyzed and interpreted successfully.

Descriptive Statistics

Descriptive statistics implies application of various coefficients that simplify process of data processing and aggregation (Trochim, ...

1. The mean of the bottling Company Case Study is 475.62(sum of all ounces of the bottles that were randomly selected on all three shifts)/30(amount of bottles that were randomly selected on all three shifts)=15.85(mean/average of ounces).
When evaluating the median of an even data set the two middle numbers are added together and the mean of those two numbers is taken. In this case, the median of the Bottling company case study is 15.98 + 16.00 = 31.98/2 = 15.49. the median is 15.49.

The standard deviation is calculated as

σ = √[ ∑(x-mean)^2 / N ]
σ = √13.115/29 = √.4522 = 0.6724581771381771
2.
N=30, x = 15.85, s= ...

Psychology

Introduction
The use of Null Hypothesis Significance Testing as a statistical tool for research methods in psychology became a center of debate because of the perceived errors, which was associated to the misuse of the method and erroneous conclusion in some of the published scholarly journals. Many scholarly journal publishers particularly those that are specialized in the field social psychology suggests to ban the use of NHST and the Basic and Applied Social Psychology (BASP) acted upon on this call. On the other hand, proponents of NHST argue that the problem is not with the technique, but with the ...

Introduction

In this paper we will discuss what have we learned in mathematical statistics.
Mathematical statistics is a branch of mathematics, which is developing methods for recording, describing and analyzing the data of observations and experiments in order to construct probabilistic models of random mass phenomena. Depending on the mathematical nature of the concrete results of observations divided by the mathematical statistics Statistics numbers, multivariate statistical analysis, the functions (processes) and time series, Statistics non-numeric objects of nature.
There are three parts of mathematical statistics: descriptive statistics, estimation theory and the theory of testing hypotheses. Descriptive statistics is the ...

- Why is the coefficient of correlation an important tool for statisticians? Provide some specific examples from real life.
Correlation (from Lat. Correlatio - ratio, the relationship), correlation - a statistical relationship between two or more random variables (or variables that can with some reasonable degree of accuracy considered as such). When this change in the values ​​of one or more of these quantities are accompanied by systematic variation, or other values ​​of other variables. Mathematical measure of correlation between two random variables is the correlation ratio, or the correlation coefficient r. If the change of a random variable does ...

Abstract

This paper contains t-test analysis for intrinsic motivation by gender and extrinsic motivation by position based on AIU survey data. In all the two cases, null hypothesis failed to be rejected.

Introduction

Hypothesis refers to a speculative explanation or answer to research problem or question (Lourens & Bedeker, 2007). The process of statistically choosing competing hypotheses is referred to as hypothesis testing (Kruglanski & Higgins, 2003). Some of the statistical methods of testing hypothesis included t-test and z-test.

Null hypotheses
There is no significant difference between intrinsic motivation means of males and females
Ho: µmale -µfemale = 0

Alternative hypothesis

There is significance ...

Introduction

In this paper we will discover the understanding of basic theories of mathematical statistics and learn how to use measures of central tendency and measures of variation. To do this, we choose two variables from the data set – one variable is continuous and one is nominal. Then we will explore if there any relationships regarding these variables – we perform a hypothesis testing using SPSS 17 Statistical Software. Charts and graphs are also will be used in this paper.

Body

As a continuous variable we choose Total Family Income (INCOME)
As a nominal variable we take Race of Respondent (RACE).
We begin ...

Questions

Questions

- The population is set of all measurements of the focus while the sample is a subset of the population. It is vital for a researcher to study the sample in order to detect a statistically vital outcome. Sampling error is an error which is obtained from samples when estimating the population size.
- Descriptive statistics deal with procedure used to summarize the information in the set of measurement. For example, collection and summarization. Inferential statistics use procedures to make predictions of a population. For example, hypothesis testing. The researcher uses them to establish relationships between variables.
- The independent ...

- A 95% confidence interval for the mean income of shop assistants in a certain city is found to be (£12,000, £15,000). Explain briefly what this means. Would a 99% confidence interval be better than a 95% one? Justify your answer.
ANS – It means that there is 95% probability that the value of the parameter i.e. individual incomes of different shop assistants shall lie within the range of £12,000 to £15,000. Yes, 99% confidence level is better than a 95% one as it increases the probability of the incomes of different shop assistants to lie within the defined ...

Quantitative Analysis

A parameter is a variable that is used to estimate the true population characteristics. In statistics, a parameter variable is derived from the sample data and used in describing the population characteristics. The population is composed of an infinite number of variables that are difficult to examine and make a sufficient conclusion. For instance, the total number of robust costumers may be a large number which can be difficult to interrogate and obtain the required information. Sample parameter helps in tackling these difficulties by examining a given number of customers and relating the observed data with the total population of customers. This makes easier ...