Maths

Paper 2: Statistics and Mechanics AS Wednesday 22 May 2019 SECTION A: STATISTICS 1. A sixth form college has 84 students in Year 12 and 56 students in Year 13 The head teacher selects a stratified sample of 40 students, stratified by year group. (a) Describe how this sample could be taken. (3) The head teacher is investigating the relationship between the amount of sleep, s hours, that each student had the night before they took an aptitude test and their performance in the test, p marks...

Answer ALL the questions. Write your answers in the spaces provided. 2 A helicopter flies between 3 locations, A, B and C, which are positioned such that AB = 9 km, AC = 5 km and angle °. ABC = 24 Find the possible values of angle ACB to 1 decimal place. (3) 1 a) Given that f(x) = x 3 – 4x 2 – 3x + 7, find f '(x). (2) b) Hence find the values of x for which f(x) is a decreasing function, giving your answer in the form {x : x > «a{} x : x < b} where a and b are real numb...

AQA A-level MATHEMATICS 7357/2 Paper 2 Mark scheme June 2020 Version: 1.0 Final Mark Scheme

AQA A-level MATHEMATICS 7357/2 Paper 2 Mark scheme June 2020 Version: 1.0 Final Mark Scheme AQA A-level MATHEMATICS 7357/2 Paper 2 Mark scheme June 2020 Version: 1.0 Final Mark Scheme