Glenda checks the computer monitors made at her company for defects. It has been shown that 0.5% of the monitors are defective.

She decides to check several monitors and record if they are defective. Which of the following will make this process into a binomial experiment? - Glenda checks the monitors until she has 300 defective monitors.
- Glenda checks 300 monitors and records the number that are defective until she gets greater than 0.5% defective monitors.
- Glenda checks the monitors until she has 300 non-defective monitors.
- Glenda chooses to check 300 monitors.

A binomial experiment is defined as a statistical experiment which consists of n repeated trials. Only two possible outcomes are possible in each trial- either its a success or a failure. Here the probability of success remains the same on every trial.

Now, to know about the defects through binomial experiment Glenda must choose a number of computers or trials. So, option D is correct.