4b 0.98 is M1A0 Pearson Progression Step Q Scheme Marks AOs and Progress descriptor 5a B1 3.1b 5th ~ 0.05) X B(20, B1 3.1b Understand the B1 for binomial binomial distribution (and B1 for 20 and 0.05 its notation) and its use as a model. (2) 5b P(X = 0) = 0.358 (awrt) B1 3.4 5th A1 1.1b Calculate binomial probabilities. (2) 5c P(X > 4) = 1 M1 3.4 6th – = 1 0.9974 Use statistical – tables and = 0.0026 (2 s.f.) (answer given) A1* 1.1b calculators to find cumulative binomial probabilities. (2) (6 marks) Notes 5b P(X = 0) = 0.9520 Pearson Q Scheme Marks AOs Progression Step
4b 0.98 is M1A0 Q Scheme Marks AOs Pearson Progression Step and Progress descriptor 5a X ~ B(20, 0.05) B1 for binomial B1 for 20 and 0.05 B1 B1 3.1b 3.1b 5th Understand the binomial distribution (and its notation) and its use as a model. (2) 5b P(X = 0) = 0.358 (awrt) B1 A1 3.4 1.1b 5th Calculate binomial probabilities. (2) 5c P(X > 4) = 1 – = 1 – 0.9974 M1 3.4 6th Use statistical tables and calculators to find cumulative binomial probabilities. = 0.0026 (2 s.f.) (answer given) A1* 1.1b (2) (6 marks) Notes 5b P(X = 0) = 0.9520 Q Scheme Marks AOs Pearson Progression Step
as_maths_statistics_unit_4_ms.docx