OCR S1 2008 January — Question 2

Exam BoardOCR
ModuleS1 (Statistics 1)
Year2008
SessionJanuary
TopicGeometric Distribution
TypeMean/expectation of geometric distribution
2 A random variable \(T\) has the distribution \(\operatorname { Geo } \left( \frac { 1 } { 5 } \right)\). Find
  1. \(\mathrm { P } ( T = 4 )\),
  2. \(\mathrm { P } ( T > 4 )\),
  3. \(\mathrm { E } ( T )\).
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