Alpha testing case study


Alpha-1 Antitrypsin Deficiency Adult Liver Study The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. AFP : Alpha-fetoprotein (AFP) is a glycoprotein that is produced in early fetal life by the liver and by a variety of tumors including hepatocellular carcinoma, hepatoblastoma, and nonseminomatous germ cell tumors of the ovary and testis (eg, yolk sac and embryonal carcinoma). In a two-tailed test, you will reject the null hypothesis if your sample mean falls in either tail of the distribution. For this reason, the alpha level (let’s assume .05) is split across the two tails. The curve below shows the critical regions for a two-tailed test. Hypothesis Testing, Power, Sample Size and Con dence Intervals (Part 1) One sample test for the mean Hypothesis testing One sample t-test for the mean I When data come from a normal distribution and H 0 holds, the t ratio follows the t distribution. What does that mean? I Draw a sample from the population, conduct the study and calculate the t ... CASE STUDY: Gumout /Shell Lubricants. Alpha was engaged to develop packaging for a concentrated fuel injection cleaner for Shell Lubricant’s Gumout line that delivers the same number of treatments in smaller, lighter-weight containers. A TEST CASE is a set of conditions or variables under which a tester will determine whether a system under test satisfies requirements or works correctly. The process of developing test cases can also help find problems in the requirements or design of an application. Test Case Template A test case can have the following …