A small-business Web site contains 100 pages and 60%, 30%, and 10% of the pages contain low, moderate, and high graphic content, respectively. A sample of four pages is selected without replacement, and X and Y denote the number of pages with moderate and high graphics output in the sample, respectively. What is the marginal standard deviation of the number of pages among those chosen with high graphics? Setup the complete pmf first. So, compute the probabilities for each joint values of X and Y. Forexample, P(X=1,Y=1) is the chance of selecting 1 page with moderate graphics and 1 page with highgraphics and 2 other pages that have low graphics (do not forget that 4 pages are to be selected, andpages can either have low, moderate, or high graphics).Here's a part of the pmf table:www13O 0.124357822????????????1????????????Y???0.0206570.000918?????????34 5.35547E-05?????????????????????Note that you cannot have X=4 and Y=1, because there are only 4 pages to be selected at random.Once you have all the probabilities in the pmf, compute the marginal probabilities of XCompute the marginal mean of Y using the marginal probabilities. Or, there's a quicker way to dothis. Since 10% of the 100 pages have high graphics, then that same probability should hold true ifyou take a sample of 4 pages from 100 smile. Nevertheless, you need the pmf table to compute themarginal variance.Compute the marginal variance. Do not forget that the 2nd term of the formula is the square of themarginal mean.Do not forget that it's the standard deviation that is being asked here.

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A small-business Web site contains 100 pages and 60%, 30%, and 10% of the pages contain low, moderate, and high graphic content, respectively. A sample of four pages is selected without replacement, and X and Y denote the number of pages with moderate and high graphics output in the sample, respectively. What is the marginal standard deviation of the number of pages among those chosen with high graphics?

A small-business Web site contains 100 pages and 60%, 30%, and 10% of the pages contain low, moderate, and high graphic content, respectively. A sample of four pages is selected without replacement, and X and Y denote the number of pages with moderate and high graphics output in the sample, respectively. What is the marginal standard deviation of the number of pages among those chosen with high graphics?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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