Random variable

their health, specifically cardio health by means of exercising. Hypothesis: Exercises improve cardiovascular health in teenagers. Active teenagers have a lower heart rate and blood pressure than those of inactive teenagers Prediction: Dependent variables:…

Manufacturing System Purpose The purpose of this study is to show how quality improvements are possible through improvements in human performance. This research presents four case studies that demonstrating the relationship between quality and different variables affecting human performance. The study target is based on two different audiences. First is to demonstrate to a manufacturing engineering audience about the importance of ergonomics considerations in manufacturing systems design. Second…

something that is bad for you, it can also be good. In fact, it is in your stomach; it’s practically everywhere. To test the ubiquity of bacteria, my class and I conducted an experiment. We sampled random surfaces like ears, mouths, cell phones, soil, shoe, desk, bathroom door handles, and as our constant variable we left one side of our TSA plate blank. This should tell us whether or not our hypothesis is correct. My hypothesis was, “bacteria is found in every unclean place.” I thought I…

color shock ( ). All variables were treated as though they were independent variables. Changes were eventually made to allow for coding of the data. Once this occurred they had to change the process for coding data of the computer program. The data was used to show to show the least amount of variables possible for being successful at predicting suicide. The study was completed by testing all subjects and the 375 subjects had been scored blind. There was a random table of numbers used…

There are different types of parametric tests to determine if a statistically significant difference is present. An independent-samples t-test is used when comparing two groups on one continuous dependent variable that is normally distributed. A paired-samples t-test is used when you look at the differences of one group across two time periods or observation periods. ANOVA tests are used when we are examining more than two groups or more than two observation periods. Slide 3: Our null…

and physical abuse which then lead to negative outcomes for these women. Methodology/Research Design This proposal’s approach is a descriptive study, survey of questions, posed to volunteers initially mandated to drug court. They were selected at random to help determine if the drug courts outcome measures were indeed effective at meeting their (Drug courts) goals and to learn information about the behavior and other traits that contribute to drug use. The women filled out the survey, placed it…

gibberellic acid had more of an effect on the plants in two days rather than eleven. In the graph however, there are some drops possibly indicating shrinkage. This does not occur regularly in plants. A reason for this could be instrument resolution (random error). Most instruments that are used for calculation have finite precision making it hard to read small measurements – in this case it was difficult to get exact measurements for the plants because parameters were not defined (i.e where to…

autonomy, for which the development of a self-regulatory counseling aid was necessary and urgent. Third, by going through explicit conceptualization and operationalization, the concept of “health” was actually transformed into observable and testable variables, that were the foundation of four hypotheses in the article that turned out to be clear and…

null hypothesis is that going to concert does not make people happier. The independent variable will be attending concerts and the dependent variable will be the happiness level. Before starting the experiment, I would randomly divide the participants into three equal groups. For group one, I would ask their favorite music genre and have them attend concerts accordingly. For group two, I would have them attend random concerts. The last group will be the control group; therefore, they do not get…

treatment for incarcerated inmates at the Amity Prison in California using the Therapeutic Community (TC) treatment module. Participating inmates did so voluntarily; however, the inmate assigned to either the treatment group or the control group was random. The selected inmates had between 9-12 months remaining on their prison sentence. In addition to the treatment the inmates received in prison, once they were released from custody, those in the treatment group had the opportunity to…