Hello all, I missed a few days in my statistics class, and I need help with some homework, the question is as follows:
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
Probability 0.007 0.573 0.260 0.160
Question: If we randomly select a full time student, what is the probability that he/she is 25 or older?
Second question: If we randomly select a full time student, what is the probability that he/she is NOT 18-24 years old?
I would appreciate solutions, and/or the steps that must be taken to find them.