S2 Jan 2015 IAL, Question 1 BWatch
I don't understand why they write it like P(Y >= 1) WHAT IS Y? its making me want to tear my hair out
The ideal answer to 1B would start "Let Y = the number of cars caught in a 48 hour period. The distribution of Y is Y~Po(1.6)". They just happened to have chosen Y. You could use any letter as long as you define your random variable and state its distribution.