A teacher wants to find out whether coin flips of dimes have a 50% chance of coming up tails. In the last 5 minutes of class, he has all the students flip dimes until the end of class and then report their results to him. Which conditions for use of the binomial model is/ar not met?

The number of trails is fixed

There are two possible outcomes

The trails are independent

The probability of success, p, is constant

All the conditions for the binomial model are met