Random sample

1.) I would use a longitudinal study to test children in this elementary school over time. Since an observational study is based on collecting data from samples, I would design a questionnaire asking children how much time they spend on mathematical learning applications (math apps) and some representative math problems for testing their mathematical reasoning skill. More specifically, children are going to be asked by questionnaires repeatedly (6 times in three years). The independent variable…

collegiate level. The policy developed by the University includes strict detailed oriented instructions upon collection of a urine sample, to ensure that results are not contaminated and/or tampered with. It also emphasizes the importance of a samples being collected under the observation of a sports medicine staff member. It goes even further in detail to explain how samples are to be labeled. The policy identifies how student-athletes are to be notified once having been found guilty of using…

quasi-experiment/ observational study. An invasive species and a native species were selected to assist in accepting/ rejecting the hypothesis. The Privet (Ligustrum sp.) and the Spicebush (Lindera benzoin) were selected as the experimental units out of a random sample** within the University Woods. Prior to studying both plants in their habitats, research was collected to easily identify the Privet and the Spicebush. Once in the plant…

The sample size is an important feature of empirical study In which the goal is to make inferences about a population from a sample. In this article. A sample size of at least 182 observations was determined using a sample size formula recommended by Sceaffer et al. (2006:46). According to Brink et al. (2013:13), a sample size is a part of fraction of whole, or the subject of a larger set selected by the researcher…

Rock Pocket Mouse Questions 2. A rock pocket mouse’s color influences whether it survives or dies. The less visible the mouse is in its habitat, the more likely it will survive. Mice that stand out in their habitat have a greater chance of being spotted by a predator. Mice that are similar in color to their habitat are more likely to survive and reproduce. 3. A mutation in the DNA of rock pocket mouse in location A caused it to have black fur. Because the dark-colored fur was easily visible…

Diabetes is diagnosed on the basis of history (ie polyuria, polydipsia and unexplained weight loss) in addition to a random venous plasma glucose concentration >= 11.1 mmol/l OR a fasting plasma glucose concentration >= 7.0 mmol/l (whole blood >= 6.1 mmol/l) OR 2 hour plasma glucose concentration >= 11.1 mmol/l 2 hours after 75g anhydrous glucose in an oral glucose tolerance test (OGTT). With no symptoms diagnosis should not be based on a single glucose determination but requires…

appear to be very different between the control and experimental group, which should have been assumed. Once the sample was subtracted from the baseline for each day, there was a way to compare the control days to the experimental days while accounting for daily fluctuations of urine osmolarity. The asparagus treatment did result in a much smaller difference between the baseline and sample collections (Figure 1.), even though this finding was not significant (p > 0.05; Table 2.). A greater…

primers, they attach themselves to the strand and begin adding nucleotides. The marker band sizes for the PCR are as follows: the smallest band size is 100, the largest is 1000 and the steps/increments of the markers increase by 100. 0.1pM of each sample from patients were used. The annealing temperature was set to 55oC and the denaturing temperature was 96oC. It is at 96oC because the DNA polymerase breaks down at 95oC therefore it is the temperature needed to separate two complementary strand…

detect the presence of drugs, especially from a blood or urine sample and especially for illegal substances. Testing children for illegal drugs in school is an important question to consider, and ultimately one best left for parents, teachers, and school administrators. There is no right or wrong answer, and no “one size fits all” solution. A well-known Supreme Court trial was held against a teenager that resisted from taking a random drug test. In a landmark ruling, the US…

1. What type of data do you need? In this study, the researchers use the quantitative data collection methods; they rely on random sampling, Michigan diabetic neuropathy score, and neuropathy quality of life questionnaire. 2. Where will the data come from? The required data will be provided by the diabetic patients; the patients will be asked to answer the online questionnaire that assesses patient’s subjective reports of functioning and quality of life in six domains. Participants were…