WJEC Unit 4 2024 June — Question 1

Exam BoardWJEC
ModuleUnit 4 (Unit 4)
Year2024
SessionJune
TopicProbability Definitions
TypeTwo-way table probabilities

  1. The table below shows the destination from school of 180 year 11 pupils. Most pupils either continued education, in school or college, or went into some form of employment.
\cline { 2 - 6 } \multicolumn{1}{c|}{}SchoolCollegeEmploymentOtherTotal
Boys334982\(\mathbf { 9 2 }\)
Girls404071\(\mathbf { 8 8 }\)
Total\(\mathbf { 7 3 }\)\(\mathbf { 8 9 }\)\(\mathbf { 1 5 }\)\(\mathbf { 3 }\)\(\mathbf { 1 8 0 }\)
A reporter selects two pupils at random to interview. Given that the first pupil is in school or college, find the probability that both pupils are girls.