Answer:
Step-by-step explanation:
0-2 is 30%
3-4 is 20%
5-6 is 20%
7-9 is 30%
so by his estimations a song bird would come up next at 20% of the time
or in 5 birds 100% percent of the time, but we have to look at his empirical data to see how accurate that is hmmm maybe a good time for a spread sheet or Mat Lab ??? hmm
13/20 is what I counted.. or out of 100
that's 13*5 or 65%
I'm not sure what form they want it in.. percent.. fraction hmm hope that will help :/
