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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SOFTWARE TESTING SOFTWARE TESTING Testing is the process of executing a program with the intent of finding errors. TESTING PRINCIPLES All tests should be traceable to customer requirements. Tests should be planned long before testing begins. The Pareto principle applies to software testing. Stated simply‚ the Pareto principle implies that 80 percent of all errors uncovered during testing will likely be traceable to 20 percent of all program components. TESTING PRINCIPLES Testing should begin
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Engineering Classification of Software Testing Tools Based on the Software Testing Methods Khaled M. Mustafa‚ Rafa E. Al-Qutaish‚ Mohammad I. Muhairat Al-Zaytoonah University of Jordan‚ Airport Street‚ Amman‚ Jordan Abstract During the software development life cycle‚ testing is highly needed to assure the quality of the software process and product. For many years‚ researchers and practitioners came-up with a variety of software tools to automate the testing process. In this paper‚ we will classify
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Software Testing Carnegie Mellon University 18-849b Dependable Embedded Systems Spring 1999 Authors: Jiantao Pan mailto:%20jpan@cmu.edu Abstract: Software testing is any activity aimed at evaluating an attribute or capability of a program or system and determining that it meets its required results. [Hetzel88] Although crucial to software quality and widely deployed by programmers and testers‚ software testing still remains an art‚ due to limited understanding of the principles of software
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TESTING FOR MACROMOLECULES Describe the positive test for starch. Explain how you know. The positive test for starch is adding iodine solution. In the experiment‚ the starch solution had the most dramatic reaction with the iodine solution. It turned to an opaque bluish-purple solution while other samples all turned to a colour related to orange and yellow other than the vegetable oil. But the vegetable oil was more translucent than completely opaque. Describe the positive test for
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3-5 minute speech Scientists should not be allowed to test products intended for human use on animals. My speech today is about animal testing and I am against it. Animal testing is testing cruelty more than science. Animals are not treated well and are often abused by their handlers. Imagine‚ living in a confined space with other animals‚ some insane‚ some infested with diseases as a result of experiments‚ limited movements‚ having people rub burning products onto you‚ watching your every
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Prenatal testing and the disability rights If the researchers can identify the sequences of genes they can correct the sequences related with disease and disability. Researchers had a less success using gene therapy to correct such conditions and no researchers had at least tried to use gene therapy to correct impairments in a fetus. Prenatal testing: • The prenatal testing is a logical extension of good prenatal care: the idea is that prenatal testing helps prospective parents have healthy babies
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student‚ such as high school graduation or grade promotion. Tests are called "standardized" when all students answer the same questions under similar conditions and their responses are scored in the same way. Research has shown that high-stakes testing causes damage to individual students and education. It is not a reasonable method for improving schools. Test-taking anxiety is common among high school and college students. The anxiety can be quite stressful and
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Animal testing is cruel‚ unnecessary‚ and disgusting. The results of most animal tests are rarely relevant to humans and are not reliable. It is unneeded in today’s society‚ considering our technological advancements. More accurate and scientifically superior methods are available‚ usually costing less and even being quicker to perform. There are methods such as using blood from human volunteers‚ using artificial human skin (proven by the National Cancer Institute to be a perfect substitute)‚ human
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Mandatory Drug Testing for Welfare Recipients Introduction Mandatory drug testing for welfare recipients is a controversial issue. Should the government hold people accepting government entitlement’s accountable for illegal drug use or would this type of action cross the boundary of civil liberties into an invasion of privacy? The government has a vested interest in getting welfare recipients back into the working population. Holding welfare recipients accountable for illicit drug use only
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