AS & A Level Further Mathematics (9231) — May–June 2025, Paper 42
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The manager of a hardware store is interested in whether there is a difference in the amount spent per customer on weekdays ($x) compared to weekends ($y). Random samples of 120…
Answer this question and get it marked →As shown in the diagram, the continuous random variable X has probability density function f given by f(x) = a for 0 <= x <= 5, f(x) = b - cx for 5 <= x <= 8, f(x) = 0 otherwise,…
Answer this question and get it marked →Eggs in a supermarket are sold in boxes of six. A supermarket manager wishes to model the number of broken eggs in the boxes sold in the store. A random sample of 2000 boxes is…
Answer this question and get it marked →A researcher is interested in whether there is a difference between two schools in students' aptitude for English. She randomly chooses 10 students from school X and 8 students of…
Answer this question and get it marked →Two jigsaw puzzles have the same number of pieces with identical shapes but have different pictures printed on them. One puzzle has a seaside picture and the other has a cartoon…
Answer this question and get it marked →Y is a discrete random variable which takes the values 0, 2, 4, ... . The probability generating function of Y is given by GY(t) = k / (1 - a t^2). Find k in terms of a. [1]
Answer this question and get it marked →