Nexus Tech is a software company that employs 180 developers across three departments: Design, Engineering, and Marketing. The developers are also classified by their experience level as either Junior or Senior.
The distribution of the developers is shown in the table below:
| Experience Level | Design | Engineering | Marketing |
|---|---|---|---|
| Junior | 25 | 70 | 35 |
| Senior | 15 | 20 | 15 |
A developer is selected at random. Find the probability that: (i) the developer is a Junior. (ii) the developer works in the Engineering department.
Given that a randomly chosen developer is Senior, find the probability that this developer does not work in the Design department.
The HR director wants to select three different developers at random to form a focus group. Calculate the probability that all three chosen developers work in the Engineering department.
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.
