A simple mathematical statistics problem
Not what you're looking for?
Two statistically independent random variables X and Y have mean values 2 and 4 respectively, and 2nd order moment about the origin 8 and 25, respectively. Find the variance of the random variable W = 3X-Y
Purchase this Solution
Solution Summary
Variance of the linear combination of two independent variables is evaluated.
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.