About 35% of the population has blue eyes (based on a study at Indiana University).

a. If someone is randomly selected, what is the probability that he or she does not have blue eyes?

P(Person has blue eyes) = 35/100 = 0.35.

P(Randomly selected person does not have bluw eye) = 1- 0.35 = 0.65.

1-.35=.65

To calculate the probability that someone does not have blue eyes, we need to subtract the probability of having blue eyes (35%) from 100%.

Therefore, the probability of not having blue eyes is:

100% - 35% = 65%

To find the probability that someone does not have blue eyes, we need to subtract the probability of having blue eyes from 1.

First, let's calculate the probability of having blue eyes:
Given that about 35% of the population has blue eyes, the probability of someone having blue eyes is 0.35 (or 35%).

Next, we can find the probability of not having blue eyes:
Probability of not having blue eyes = 1 - Probability of having blue eyes

Probability of not having blue eyes = 1 - 0.35
Probability of not having blue eyes = 0.65 (or 65%)

Therefore, if someone is randomly selected, there is a 65% probability that he or she does not have blue eyes.