We have a bag of 10 marbles with some combination of red and blue marbles. We don't know the exact content of the bag, but we know it's one of two possibilities:

H0:The bag contains 8 blue marbles and 2 red marbles

Ha:The bag contains 5 blue marbles and 5 red marbles

We will choose one marble and try to guess which hypothesis is correct. Our decision criteria is:

If we select a red marble, then we will reject the null hypothesis.

What is the probability of a type 1 error?

1. 0.2
2. 0.5
3. 0.1
4. 0.05
5. 0.01