Posts

Showing posts from March 7, 2019

Thoiras

Image
Toiras ist eine Weiterleitung auf diesen Artikel. Zum Marschall von Frankreich siehe Jean de Saint-Bonnet de Toiras. Zum preußischen Oberst siehe David Salomon Rapin de Thoiras. Thoiras Region Okzitanien Département Gard Arrondissement Alès Kanton La Grand-Combe Gemeindeverband Alès Agglomération Koordinaten 44° 4′  N , 3° 56′  O 44.065277777778 3.9277777777778 Koordinaten: 44° 4′  N , 3° 56′  O Höhe 139–503 m Fläche 22,89 km 2 Einwohner 441 (1. Januar 2016) Bevölkerungsdichte 19 Einw./km 2 Postleitzahl 30140 INSEE-Code 30329 Thoiras (frühere Schreibweise Toiras , okzitan. Toiraç ) ist eine französische Gemeinde im Département Gard in der Region Languedoc-Roussillon. Die Gemeinde liegt am Fluss la Salindrenque, der östlich des Ortes in den Gardon de Saint-Jean mündet, am Fuß der Cévennen auf einer Höhe zwischen 139 m und 169  m und hat 441 Einwohner (Stand 1. Januar 20

Are healthy patients an appropriate control group?

Image
2 $begingroup$ I am working on a study where patients with a chronic disease received a treatment. The goal is to determine the effect of the treatment on various outcome variables. I have pre and post data (before and after the treatment) for the sick patients and also for a control group of patients who are healthy. It would have been considered unethical to withhold treatment from sick patients, hence there was no control group of sick patients who did not receive the treatment. I plan to analyze the data using linear mixed effects models. I’ve seen examples of how to analyze this type of data when you have pre/post data with a control group, for example including variables in the model such as the time point, whether the individual is in the treatment or control group, and the interaction between the two.

Stuck at defining the density function for a random variable

Image
-1 $begingroup$ So I have an assignment regarding probability and random variables which states the following: The random variable Y is defined in the following statement: On a random way we select a point from a circle with a radius of $6$ . The random variable $X$ is defined as the distance between the selected point and the center of the circle and $Y = 3 - X$ . Using the following statements define the function of distribution and the density of the distribution for the random variable $Y$ . I assume since we pick the point at random and each point has a fair chance of getting picked the Y has a uniform distribution with the constant c being equaled to 1/36*PI. However I have no idea how to implement the random variable X or the statement Y=3-X in the equation. Can anyone help me?