An automated manufacturing system monitors three specific types of production errors: Event DDD (calibration drift), Event SSS (sensor saturation), and Event MMM (mechanical misalignment).
The probabilities of these errors occurring in a single cycle are given by:
P(D)=0.3,P(S∣D)=0.4,P(D∪S)=0.58,P(M)=0.5 P(D) = 0.3, \quad P(S|D) = 0.4, \quad P(D \cup S) = 0.58, \quad P(M) = 0.5 P(D)=0.3,P(S∣D)=0.4,P(D∪S)=0.58,P(M)=0.5Events DDD and MMM are known to be mutually exclusive.
Find P(D∪M)P(D \cup M)P(D∪M).
Show that P(S)=0.4P(S) = 0.4P(S)=0.4.
Given also that events SSS and MMM are independent,
draw a Venn diagram to represent the events DDD, SSS and MMM, indicating the probability associated with each of the eight regions.
Practise Edexcel A Level Maths Conditional Probability with exam-style questions for A Level Maths. 152 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
