Answer
Age _________________ Probability
18–79 _______________ 0.1213
80–89 _______________ 0.2522
90–99 _______________ 0.2531
100 or older ___________ 0.3734
Work Step by Step
Total: $126+262+263+388=1039$ adults.
The relative frequency for "18–79" is $\frac{126}{1039}\approx0.1213$
The relative frequency for "80–89" is $\frac{262}{1039}\approx0.2522$
The relative frequency for "90–99" is $\frac{263}{1039}\approx0.2531$
The relative frequency for "100 or older" is $\frac{388}{1039}\approx0.3734$
