Hello all, I missed a few days in my statistics class, and I need help with some homework, the question is as follows:

Information:

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.

regards,

-andrew