OCR Further Statistics AS 2021 November — Question 5

Exam BoardOCR
ModuleFurther Statistics AS (Further Statistics AS)
Year2021
SessionNovember
TopicGeometric Distribution
TypeVariance of geometric distribution
5 The discrete random variable \(X\) has a geometric distribution. It is given that \(\operatorname { Var } ( X ) = 20\).
Determine \(\mathrm { P } ( X \geqslant 7 )\).
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