CAIE S1 2005 June — Question 5

Exam BoardCAIE
ModuleS1 (Statistics 1)
Year2005
SessionJune
TopicConditional Probability
TypeBasic two-way table probability

5 Data about employment for males and females in a small rural area are shown in the table.
\cline { 2 - 3 } \multicolumn{1}{c|}{}UnemployedEmployed
Male206412
Female358305
A person from this area is chosen at random. Let \(M\) be the event that the person is male and let \(E\) be the event that the person is employed.
  1. Find \(\mathrm { P } ( M )\).
  2. Find \(\mathrm { P } ( M\) and \(E )\).
  3. Are \(M\) and \(E\) independent events? Justify your answer.
  4. Given that the person chosen is unemployed, find the probability that the person is female.