A biased spinner can land on the numbers \(1,2,3,4\) or 5 with the following probabilities.
Number on spinner
1
2
3
4
5
Probability
0.3
0.1
0.2
0.1
0.3
The spinner will be spun 80 times and the mean of the numbers it lands on will be calculated. Find an estimate of the probability that this mean will be greater than 3.25
(6)