Question

13 POINTS! According to the Current Population Survey, the following table summarizes probabilities for randomly selecting a full-time student in various age groups:
Age 15–17 18–24 25–34 35 or older older
Probability 0.007 0.573 0.260 0.160

If we randomly select a full-time student, what is the probability that he/she is 25 or older?
A. 0.260
B. 0.420
C. 0.740
D. The answer is impossible to determine from the information given.

Answer 1

15-17
0.007

18-24
0.573

25-34
0.260

35+
0.160

0.260 + 0.160 = 0.0416 (rounding up) = 0.0420 or B.