Type I and type II errors

Hypothesis test How to find the sample size for analytical studies and experiments? State the null and alternative hypothesis. Choose the statistical test based on the type of predictor and outcome variables. Choose an appropriate effect size. Set type 1 (alpha) and type 2 (beta) error. Use the appropriate table to to look for the corresponding sample size. Basic Concepts Hypotheses: Null and Alternative hypotheses People often look into statistical relationship through the test of…

Introduction The Morse Fall Risk Assessment is used to identify risk factors for falls. It is most important to identify and plan care for risk factors, but the total score may also be used to predict future falls. This tool takes less than three minutes to complete and is administered by a registered nurse. It is combined with a clinical assessment and review of medications to assess the patient’s risk for falls. The tool should be administered at least once a day and also if there is a change…

that led to such a high number of deaths. Such factors as sex, class, age, and others also significantly contributed to the likelihood of survival. Introducing different statistical methods, I will classify what sorts of people had a better chance of survival the shipwreck. For the data analysis, I have used the dataset “Titanic_Passanger_List” that consists of 1309 observations of passenger on Titanic. “Survived” is a predictor variable that describes whether or not a person survived…

With the advancement of medicine and technology, it is evident that there is a growing elderly population in the developed countries such as the United States. Perhaps, some casually phrase it as the “baby boomers getting older.” My experience as a nurse taught me that despite developments in modern medicine, there are challenges such as elderly independence and prevention of falls along with the combination of polypharmacy and multiple comorbidities posing as risks. The Center for Disease…

Denver Developmental Screening Tool II: Explanation and Implementation The Denver Developmental Screening Tool II (DDSTII) is a revision of DDST and DDST-R and is the most widely used developmental screening tool for examining children. It was developed at the University of Colorado Medical Center in Denver, Colorado; hence it’s name. It screens a child for cognitive delays and behavioral problems from birth to 6 years of age. The sooner the delay is picked up the sooner the child can get…

It was recorded that 12 out of 35 patients, suffered from extrahepatic tumour. This was revealed by PET/CT combined and by CT scan single-handedly. The extrahepatic tumours in two of the patients were not detected by PET and PET/CT; those were recorded to have node of 2 –cm lymph in the hepatoduodenal ligament. It is furthermore, true that both forms of the scans (CT and PET/CT) reported extrahepatic tumour in patients that did not have it at all. The CT scan reported it in 3 out of 23 patients,…

According to James Blackwell, and Carol Niederhauser “the traditional screening tool, the Denver Developmental Screening Test-II (DDST-II),is lacking in sensitivity and specificity”, this being one of the test that children take when they are young. Next would be asking the parents about their history, and from this doctors can get a better idea of what might be happen and what to…

Functional behavioral assessment is necessary tool in Applied Behavior Analysis field. In this paper I will discuss my area of interest. I will also discuss Functional Behavioral Assessment testing instrument in school setting. I will discuss the false negatives, false positives, hits and miss of interpreting and the validity of FBA. Including, FBA in relations to cultural divers students. FUNCTIONAL BEHAVIORL ASSESSMENT In the field of Applied Behavior Analysis (ABA) one of…

signal is perceived as one of the animals senses (taste, hearing, sight, smell, equilibrium, etc.). There are three different types of receptors: electromagnetic receptors, mechanoreceptors, and chemoreceptors. In this lab we tested the mechanoreceptors and the electromagnetic (photo) receptors in an earthworm. To test the mechanoreceptors we separated the earthworm…

The statistical test used in this experiment was a Chi-square test because it measures the goodness of fit. There were 370 trials performed in the overall experiment. The sample size in the experiment was 740. Each cricket whether it was labeled intruder or resident had an observed and expectant number times it should win. For the resident crickets, it was expected that the cricket would win 185 times in the experiment. The observed value was calculated to be 238 wins in the experiment as well.…