# Using The Single Sample T Test Essay

1138 Words 5 Pages
For this second mini-research proposal this writer will be using the single sample t-test. There are two benefits to using the t-test, the first one is that it indicates the value for the population standard error of the mean, σM also it allows to compare with other populations over time (Sukal, 2013). The statistical notation or formula for a single sample t-test is the following: t =
M−μM
SEM

(Sukal, 2013, Formula 5.2).
This writer’s question of interest is the following: Are people with developmental disabilities prone to medical malpractice than the average population? This question is appropriate for the single sample t-test, as this writer would be interested in conducting a comparison between people with developmental disabilities and the general population. The single sample t-test, tests whether a sample is likely to belong to a specified population by using the estimated standard error of the mean (Sukal, 2013). In this case, the alternative hypothesis would be that there is no difference between people with developmental disabilities and the general population in terms of medical malpractice. The null hypothesis would be that people with developmental disabilities and the general population are both prone to medical malpractice.
The types of errors that could occur, are more likely found when the sample size is small. For instance, the higher the sample size the closer the t distribution is to a z distribution (Sukal, 2013). Therefore, the larger…

## Related Documents

• ###### T-Test and Anova Essay

BUS 310 Notes regarding Two-Sample t-Tests and ANOVAs In Chapter 9, we learned how to conduct a t test of a hypothesis when we were testing the mean of a single sample group against some pre-determined value (i.e., the 21.6 gallons of milk consumption as the national average). This week, in Chapter 10, we will see how to test hypotheses that involve more than one sample group—such as testing to see if males are significantly taller than females. If we have two groups, then the technique that…

Words: 2102 - Pages: 9
• ###### Essay Biology : Cell Culture Methodology

THP-1 cells using antibody staining and flow cytometry techniques. Assay set up THP-1 cells were prepared for the assay as follows. THP-1 cell culture was centrifuged at 500rcf for 5 minutes. The pellet was then resuspended in RPMI-2HS medium. A cell count was performed and a solution of RPMI-2HS containing 2 x 106 cells/mL THP-1 cells was prepared. H. pylori product solutions were diluted to various concentrations. Each H. pylori product was assessed over eight concentrations. Samples were diluted…

Words: 1237 - Pages: 5
• ###### Big Idea Essay

not observed statistics. Step B: Test statistic We calculate a test statistic from the data. There are different types of test statistics. This chapter introduces the one-sample z-statistics. The z statistic will compare the observed sample mean to an expected population mean μ0. Large test statistics indicate data are far from expected, providing evidence against the null hypothesis and in favor of the alternative hypothesis. Step C: p Value and conclusion The test statistic is converted to a conditional…

Words: 2519 - Pages: 11
• ###### Data Analysis Methods Used in Quantitative Research. Essay

function on a sample) whose interpretation does not depend on the population fitting any parameterized distributions. Makes more assumptions Makes fewer assumptions, their applicability are much wider than the corresponding parametric methods If those extra assumptions are correct, parametric methods can produce more accurate and precise estimates. However if those assumptions are incorrect, parametric methods can be very misleading. Hence have more statistical power Non parametric tests have less…

Words: 4346 - Pages: 18
• ###### Essay statistics GCU

Four common sampling designs have been developed for selection of a random sample: simple random sampling, stratified random sampling, cluster sampling, and systematic sampling (Burns & Grove, 2007). Simple random sampling is achieved by random selection of members from the sampling frame. The random selection can be accomplished many different ways, but the most common is using a computer program to randomly select the sample. Another example would be to assign each potential subject a number, and…

Words: 2632 - Pages: 11
• ###### An Investigation Into the Effects of Varying Seawater Concentrations on Two Marine Invertebrates’ Osmoregulatory Abilities; Carcinus Maenas and Arenicola Marina.

coagulated proteins into the Eppendorf tube. The osmolarity of the sample was measured by pipetting 100µl of the sample into another Eppendorf tube and placing this inside a Camlab Freezing Point Osmometer, ensuring the probe is clean and dry. Sodium levels were measured using a flame photometer, placed in a fume cupboard and left to run with distilled water for 15 minutes prior to running a sample. The lab schedule stated to dilute the sample with deionized water at a ratio of 1:800. 7µl of haemolymph…

Words: 2521 - Pages: 11
• ###### Biomedical Statistics: Independent Project on Urban Low Income Women Affected by Changes to Social Policies

4,000 women. A major purpose of the study was to understand the life trajectories of these women and their children during a period of major changes to social policies affecting poor people in the United States. The sample was randomly selected from women who, in 1995, were single mothers receiving cash welfare assistance in the four cities. All data were collected by means of 90-minute in-person interviews in either English or Spanish in the study participants’ homes. Professional interviewers…

Words: 2269 - Pages: 10
• ###### Essay A Research Study On T Procedure

The two-sample t procedure is appropriate to use in this experiment in order to see if there is a difference in the two population means of stride length in the two different species, N. rattus and N. squamipes. This is because the boxplots appear to be roughly symmetrical, as well as, both normal quantile-quantile plots look roughly linear. Considering two-sample t-procedures are quite robust to violations of the normality assumption, the t-procedure will likely perform well in this scenario…

Words: 806 - Pages: 4
• ###### Statistics Anova Testing Essay

Introduction In order to test the adverse reactions of the drug called Xynamine (a new drug designed to lower pulse rates) must be tested for their effectiveness and the drug is tested only for males. Here, the treatment groups are divided into 3 categories they were placebo group (no treatment), 10-mg treatment group and 20-mg treatment group. Thus, the analysis test result is carried out using the technique of one-way analysis of variance ANOVA (Analysis of Variance - single factor). Assumptions…

Words: 1182 - Pages: 5
• ###### Research Question Sample / Participants Design Variables : Dependent Independent Procedures Analysis Results Recommendations Level Of Evidence

question Sample/ Participants Design Variables: Dependent Independent Procedures Analysis Results Recommendations Level of Evidence Mukhopadhyay et al., 2010 This study has two purposes: The first purpose is to see whether a restrictive blood transfusion along with blood conservation system will decrease the amount of pack red blood cell transfusion. The second purpose is to see whether the blood conserving apparatus will conserve hemoglobin level from admission to discharge. Fore every single participant…

Words: 1160 - Pages: 5