Essays on T Test

Using the t test to determine the statistical difference in the number of days it takes to start a business between emerging and developed markets

Learning Institution Introduction According to World Bank (2015), the time required to start a business is defined as the number of days needed to legally operate a business in a given jurisdiction, usually a country. This study was conducted to find out if there were statistically significant differences in the average number of days it takes to start a business between developed markets and emerging markets. Time and cost are deemed important due to ...

Executive Summary

The objective was to compare effects of GnRH antagonist and standard long protocol agonist on number, and the quality of Metaphase II oocytes, and on reducing risk of hyperstimulation, in patients who are affected by Polycystic ovarian syndrome. Polycystic ovarian syndrome is a common endocrinopathy of the women who are in reproductive age, which is a first cause of the anovulation. GnRH agonists are used in the IVF to avoid premature LH surge before the retrieval of oocyte. Research findings from this study can be significant to various Centers for Reproductive Medicine, and also to all the institutions that practice ART. ...

1. A t-test would be of help in comparing the two different groups' blood pressure average before and after being subjected to the drug. The difference will be meaningful and real if:

The responses are constantly close enough to the average value with a low standard deviation from the mean value. The differences between the averages are large.

The t test effect size and the t test statistical significance are the two primary outputs of the t test. Statistical significance helps indicate whether the difference existing between sample averages represents actual differences between my populations (my two group ...

Part 121 and Part 135 Operations in the USA

Part 121 and Part 135 Operations in the USA Passenger safety is the main concern of the U.S. aviation industry. As passenger enplanements in the U.S. dramatically increase, more individuals and institutions are becoming more concern on the survivability of each flight. The purpose of the study was to determine the difference in accidents and incidents between Part 121 and Part 135 Operations in the US. Part 121 covers all air carrier operations like for hire carriers. Part 135 covers all air taxi and commuter program and both include operations that are scheduled and non-scheduled. The data ...

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Introduction

As technology improves, aircraft design naturally improves alongside safety measures yet accidents are unavoidable. Over the years, aircraft accidents are reportedly occurring throughout the world. The world has experienced major and minor accidents in the air. An accident that involves an aircraft is called aviation accident. The term is defined by the Convention on International Civil Aviation as the event that happened within a boarding of a person to the aircraft who has the intention of flying the vehicle which caused death or serious injury to any person ...

Abstract

Humanitarian response to the earthquake that hit Haiti in 2000 was from National Government and Non-Governmental Organizations. Support in form of rescue and relief workers got sent to Haiti. Humanitarian supplies got directly supplied to areas directly affected by the earthquake. National fund raising got organized in an effort to provide monetary support. Medical staff got sent and security personnel too. The urgency of the response to Haiti is important and the response to the appeal of donation. Use of questionnaires was quite helpful as it provided the best sample for the research. There was strong support for the humanitarian ...

Inference Concerning Mean Differences

Using statistical testing it is possible to make inferences concerning the mean difference of two samples (Black, 100). For this exercise, the mean difference for mock SAT results and real SAT scores will be compared. Using Excel a t test will be carried out in order to compare the mean mock SAT score and the mean real SAT score in order to determine whether there is a statistically significant difference in the two samples.

The dataset utilized for this exercise is shown below.

Assumptions:

There are two assumptions that will be made before the t test is carried out in excel. These ...

Dropping Out or Pushed Out: The Impact of High School Dropout Rate Relative to High Stakes Testing Policy in Wayne County, State of Michigan

Dissertation Prospectus Dropping Out or Pushed Out: The Impact of High School Dropout Rate Relative to High Stakes Testing Policy in Wayne County, State of Michigan <Insert Chair Name>

Dissertation Prospectus

Introduction The high school dropout rates in the USA are high such that only 70% of students in public high schools graduate Green, & Foster, 2003). High dropout problem is what school administrators, parents and policy makers have had to deal with for ...

Dropping Out or Pushed Out: The Impact of High School Dropout Rate Relative To High Stakes Testing Policy In The State Of Michigan

Introduction

The demand for advanced standards as well as better accountability within the US educational system has caused a nationwide raise in high stakes testing. To answer this increasing demand, in the year 2002, the act ‘No Child Left Behind’ was introduced to assure that all school children in US will get the chance as well as the resources to attain educational achievement. This act made state educational accomplishment standards and state evaluations mandatory (Cavendish, 2013). It also ...

Introduction

The data presented in this project is from the Lendingclub.com (n.d). The data in the website is a wide representation of information concerning loan data collected from members from 2007 to 2012. The period in which this data was collected is synonymous with the financial crisis in the global market. The impact of the financial crisis was far reaching. It affected the lending rates and the approval criteria for loans. Previously, the fiscal policy involved in lending loans by financial institutions cushioned the borrowers. This is because the loans fetched low interest rates and were consequently easy to repay. After ...

Energy fuel consumption- Statistic Project by using ANOVA table and Hypothesis

INTRODUCTION There is a lot to learn about the energy fuel consumption in Canada. Rather, the energy fuel consumption has got a list of salient features so as to find out the profits generated from this consumption. Canada is one of the largest energy producers and exporters of products in the world. The project aims at calculating the connection between different variables related to energy fuel consumption in Canada. Owing to my immense interest in learning about this field, I have collected a lot of raw material I have had a lot of interest in learning about the energy consumption industry ...

Gulf Real Estate Properties

Introduction: The following is a discussion of the various characteristics of Gulf View condominiums (GVC) and non- Gulf View condominiums (Non-GVC). Various descriptive statistics including the mean and standard deviation are explored. An analysis of differences using two-sample t test is undertaken to determine differences in selling prices and days to sell. The confidence intervals are determined and the sample size required to achieve desired margin of errors is determined. GVC refers to Gulf View condominiums while non-GVC refers to non-Gulf View condominiums.

Gulf Real Estate Properties characteristics:

Descriptive statistics for GVC indicate that the mean list price is 474, the mean sale price ...

Research Question 1: To analyze that does review session made any difference in the performance of students, the group means of students who attended the review session was compared with group mean of those students who didn’t attend the review session. t test for independent samples was run in SPSS and the result obtained is:

Group Statistics

ATTENDED REVIEW SESSIONS? N

Mean

Std. Deviation Std. Error Mean NO

YES

The descriptive statistics for the attended review classes and final exam points shows that the mean of students attending review sessions of final exam point is a little higher than ...

Abstract

Annual wages of the employees are studied for their relation with several dependent variables to identify the most factors most impacting the variation in the annual wages. This paper attempts to analyze and establish the relationship of annual wages with the number of years of experience. Annual wages are considered to be a function of number of years of experience and there’s assumed to be a positive correlation. This paper tests the relationship using linear regression analysis method between the two variables. Annual wages is considered as the dependent variable and number of years of employment is taken as the ...

Abstract

The paper performs t test analysis to test the hypothesis for the dataset used for the statistical purpose. Inferences have been derived regarding the intrinsic and extrinsic satisfaction by gender and position respectively to accept or reject the null hypothesis. Tabulated representation of the analysis data is displayed for the interpretation of the results in the paper.

Introduction

T test is performed to accept or reject the null hypothesis in the paper. The intrinsic and extrinsic satisfaction of the employees is tested through the two sample t-test. The data is hypothesized to test that the intrinsic job satisfaction of the ...