A discrete random variable W W\,W has the probability function:
| www | 2 | 3 | 7 | 8 |
| P(W=w)P(W=w)P(W=w) | 0.12 | ddd | 0.28 | 0.3 |
Find the value of ddd
Find P(W>4.5)P(W > 4.5)P(W>4.5)
Construct a table for the cumulative distribution FW(w)F_W(w)FW(w)
57 exam-style questions on Edexcel AS Level Maths Statistical Distributions, covering 6.1 Probability Distributions, 6.2 The Binomial Distribution, and 6.3 Cumulative Probabilities. Each one has a worked solution and a mark scheme showing where the marks go.