Month: September 2011

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Distribución en el Muestreo

Para ir practicando ejercicios resueltos y medianamente explicados, no tengo tiempo para pasarlos a libreOffice asi que van a manito (no tengo mejor letra)

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Distribución en el muestreo
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Examen diciembre 2010 Métodos Estadísticos

1) (1,5 puntos) Dada una muestra aleatoria{x_1,x_2, ..., x_100}de una distribución normal de media 16 y varianza 4, calcular el valor b tal que

2) (1,5 puntos) Encontrar el estimador máximo verosímil para el parámetro Beta de la función de densidad:

función de densidad3)(2 Puntos) El tiempo de acceso (en milisegundos) en situarse una aguja lectora/escritora en un cilindro se supone que sigue una distribución normal. Para determinar en el tiempo medio de acceso se obtuvo una muestra aleatoria de tamaño n=10, con media=14.23, cuasivarianza muestral 1,75 .

  1. Obtener un intervalo de confianza al 75% para mu , tiempo medio de acceso. A partir del intervalo anterior obtener el I.C. Para el tiempo medio en segundos.
  2. ¿Puedo asegurar en cualquier caso que el tiempo medio de acceso está siempre dentro del intervalo. Justifica tu respuesta
  3. Observando el intervalo, ¿Puedo afirmar que el tiempo medio de acceso es 12ms? Justifica tu respuesta
  4. Si se mantiene la media y cuasivarianza muestral al aumentar el tamaño muestral ¿Que le ocurre a la longitud del intervalo y a su nivel de confianza? Justifica tu respuesta..

4)(2 puntos) Según el informe del observatorio galego da sociedade da informacion del 2009, el porcentaje de hogares que disponen de conexión de banda ancha a internet es del 38,3% obtenida a partir de una muestra de 1000 hogares En 2008, una muestra de 1200 hogares indico que el 35,3% de los hogares disponían de banda ancha.

  1. ¿Se justifica la conclusión de que en 2008 hay un porcentaje distinto al 2009 con un nivel de significación del 5%? Responder sin usar el p-valor y calculando en p-valor.
  2. Si los datos anteriores se mantuviesen constantes el aumentar los tamaños muestrales, como afectaría esta cambio a la decisión del contraste y al valor numérico del p-valor. Justifica tu respuesta.

enjoy

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How to check if a Software License Is an Open Source License Case study: Microsotf Shared Source License

License Text

MICROSOFT SHARED SOURCE CLI, C#, AND JSCRIPT LICENSE
This License governs use of the accompanying Software, and your use of the Software constitutes acceptance of this license.
You may use this Software for any non-commercial purpose, subject to the restrictions in this license. Some purposes which can be non-commercial are teaching, academic research, and personal experimentation. You may also distribute this Software with books or other teaching materials, or publish the Software on websites, that are intended to teach the use of the Software.
You may not use or distribute this Software or any derivative works in any form for commercial purposes. Examples of commercial purposes would be running business operations, licensing, leasing, or selling the Software, or distributing the Software for use with commercial products.
You may modify this Software and distribute the modified Software for non-commercial purposes, however, you may not grant rights to the Software or derivative works that are broader than those provided by this License. For example, you may not distribute modifications of the Software under terms that would permit commercial use, or under terms that purport to require the Software or derivative works to be sublicensed to others.
You may use any information in intangible form that you remember after accessing the Software. However, this right does not grant you a license to any of Microsoft’s copyrights or patents for anything you might create using such information.
In return, we simply require that you agree:

  1. Not to remove any copyright or other notices from the Software.
  2. That if you distribute the Software in source or object form, you will include a verbatim copy of this license.
  3. That if you distribute derivative works of the Software in source code form you do so only under a license that includes all of the provisions of this License, and if you distribute derivative works of the Software solely in object form you do so only under a license that complies with this License.
  4. That if you have modified the Software or created derivative works, and distribute such modifications or derivative works, you will cause the modified files to carry prominent notices so that recipients know that they are not receiving the original Software. Such notices must state: (i) that you have changed the Software; and (ii) the date of any changes.
  5. THAT THE SOFTWARE COMES “AS IS”, WITH NO WARRANTIES. THIS MEANS NO EXPRESS, IMPLIED OR STATUTORY WARRANTY, INCLUDING WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY WARRANTY OF TITLE OR NON-INFRINGEMENT. ALSO, YOU MUST PASS THIS DISCLAIMER ON WHENEVER YOU DISTRIBUTE THE SOFTWARE OR DERIVATIVE WORKS.
  6. THAT MICROSOFT WILL NOT BE LIABLE FOR ANY DAMAGES RELATED TO THE SOFTWARE OR THIS LICENSE, INCLUDING DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES, TO THE MAXIMUM EXTENT THE LAW PERMITS, NO MATTER WHAT LEGAL THEORY IT IS BASED ON. ALSO, YOU MUST PASS THIS LIMITATION OF LIABILITY ON WHENEVER YOU DISTRIBUTE THE SOFTWARE OR DERIVATIVE WORKS.
  7. That if you sue anyone over patents that you think may apply to the Software or anyone’s use of the Software, your license to the Software ends automatically.
  8. That your rights under the License end automatically if you breach it in any way.
  9. Microsoft reserves all rights not expressly granted to you in this license.

How To Check a Free License

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Installing PhpUnderControl in Centos 6

PhpUnderControl is a way to use CI under

Step 1: Enable EPEL repo and Remi repo

yum install wget

rpm -Uvh http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm

rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm

enable remi repository editing file /etc/yum.repos.d/remi.repo

enabled=1

Step2: Install Java and other stuff

yum install unzip

yum install ant

yum install java-1.6.0-openjdk-devel

yum install php-phpunit-PHP-CodeCoverage.noarch

yum install phpdoc.noarch

yum install php-phpunit-phpcpd.noarch

yum install php-phpunit-phploc.noarch

yum install php-phpunit-PHPUnit.noarch

wget ftp://ftp.pbone.net/mirror/rpms.famillecollet.com/enterprise/5/remi/x86_64/php-pear-Console-CommandLine-1.1.3-3.el5.remi.noarch.rpm

rpm -i php-pear-Console-CommandLine-1.1.3-3.el5.remi.noarch.rpm

yum install php-phpunit-PHP-CodeBrowser

yum install php-phpmd-PHP-PMD.noarch

yum install php-ezc-Graph.noarch

yum install git

yum install subversion

Step3: Download CruiseControl

cd /opt

wget http://downloads.sourceforge.net/project/cruisecontrol/CruiseControl/2.8.4/cruisecontrol-bin-2.8.4.zip?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fcruisecontrol%2Ffiles%2FCruiseControl%2F2.8.4%2F&ts=1314111366&use_mirror=heanet

unzip cruisecontrol-bin-2.8.4.zip

mv cruisecontrol-bin-2.8.4 cruisecontrol

rm cruisecontrol-bin-2.8.4.zip

cd cruisecontrol

step 4 fix problem with JAVA_HOME

open cruisecontrol.sh with your favorite editor (vim, emacs, nano, pico, gedit …) and set JAVA_HOME value, your file begin  must look like this:

<br />
&lt;br /&gt;#!/usr/bin/env bash&lt;br /&gt;<br />
JAVA_HOME=&quot;/usr/lib/jvm/java-1.6.0-openjdk&quot;&lt;br /&gt;<br />
 #################################################&lt;br /&gt;<br />
 # CruiseControl, a Continuous Integration Toolkit&lt;br /&gt;<br />
 # Copyright (c) 2001, ThoughtWorks, Inc.&lt;br /<br />
&gt; # 200 E. Randolph, 25th Floor&lt;br /&gt;<br />
 # Chicago, IL 60601 USA&lt;br /&gt;<br />
 # All rights reserved.&lt;br /&gt;<br />

step 5

open needed ports

step 6

Download PhpUnderControl

cd /opt

wget http://github.com/phpundercontrol/phpUnderControl/zipball/0.6.1beta1

mv 0.6.1beta1 0.6.1beta1.zip

unzip 0.6.1beta1.zip

mv phpundercontrol-phpUnderControl-04197bb/ phpundercontrol

step 7

Install PhpUnderControl over cruiseControl

cd phpundercontrol

cd bin

./phpuc.php install /opt/cruisecontrol/