A lengthy question about a best-of-three tennis match, but with a twist: The probability of winning a point changed depending on whether the player was serving or receiving.
Paper 2 is usually where the "differentiation" between a B and an A grade student happens. The 2012 paper was no exception, featuring a particularly thorny Binomial question and a lengthy Statistics section. 2012 njc prelim h2 math
NJC Tip: Recognize when to approximate Binomial by Poisson (( n ) large, ( p ) small) or Normal (np>5, nq>5). A lengthy question about a best-of-three tennis match,
Example: Defective rate 0.01, sample 200. Find P(more than 3 defectives) using Poisson(2). 5). Example: Defective rate 0.01