I dont understand how to work this out.
Victoria Jones runs a small business making and selling statues of her cousin the adventurer Tasmania Jones.
The statues are made in a mould, then finished (smoothed and then hand-painted using a special gold paint) by
Victoria herself. Victoria sends the statues in order of completion to an inspector, who classifies them as either
‘Superior’ or ‘Regular’, depending on the quality of their finish.
If a statue is Superior then the probability that the next statue completed is Superior is p.
If a statue is Regular then the probability that the next statue completed is Superior is p – 0.2.
p on this day is 0.75.
On this day, a group of 3 consecutive statues is inspected. Victoria knows that the first statue of the 3 statues
ii. Find the expected number of these 3 statues that will be Superior.
how do work this out ? using matrices?