WJEC Unit 4 2024 June — Question 2

Exam BoardWJEC
ModuleUnit 4 (Unit 4)
Year2024
SessionJune
TopicContinuous Uniform Random Variables
TypeGeometric applications

2. The smallest angle \(\theta\), in degrees, of a right-angled triangle with hypotenuse 8 cm , is uniformly distributed across all possible values.
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  1. Find the mean and standard deviation of \(\theta\).
  2. The shortest side of the triangle is of length \(X \mathrm {~cm}\). Find the probability that \(X\) is greater than 5 .