A drug company conducts trials of a new vaccine for a rare but usually fatal disease. The company creates a geometric model for this trial and establishes p=0.2 as the probability of success.
What can be said about this model?

Select all that apply.

1)The company predicts 4 failures before a success.

2)Each trial is independent.

3)The probability is the same for each trial.

4)The probability that the vaccine will be effective is p = 0.8.

5)Success is defined as preventing the disease.

6)The company predicts 8 failures before a success.

7)Success is defined as p = 0.2.