Skip to content

Course home

Sign up

4 Unit A2 2: Applied Mathematics (A-level only)

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145
Question 88

A survey of 80 software developers records the programming languages they use.

Of the 80 developers, 50 use Python, 32 use Java and 20 use both Python and Java.

One of the 80 developers is chosen at random. The event Y Y\,Y is defined as the developer uses Python, and the event J J\,J is defined as the developer uses Java.

a.

Determine whether the events Y Y\,Y and J J\,J are independent. Fully justify your answer.

[3]
b.

Find P(J∣Y)P(J \mid Y)P(J∣Y).

[1]
Markscheme

4 Unit A2 2: Applied Mathematics (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4 Unit A2 2: Applied Mathematics (A-level only)

Question bank