Define X as the number of information packets needed for loading a webpage. If the webpage contains only text, X will have a uniform distribution over $\{1,...,5\}.$ If the webpage contains an image, X will have a uniform distribution over $\{1,...,20\}.$ If we know that $25\%$ of the webpages contain an image, what is the expected value of of the number of packets for loading a webpage? What is the expected value of X given that X is not larger than $10?$