math help
posted by JACKIE .
Sorry if this has been posted twice, but we have tried this numerous times and can not work it. Due in the morning. Suppose that a hypothesis test is to be carried out by using á = 0.05. What is the probability of committing a type I error? (Give your answer correct to two decimal places.)

Sorry, but what is a type I error?

occurs if you reject the null hypothesis when it I true

The probability of committing a type I error is the level of significance, α.
See:
http://www.cs.uni.edu/~campbell/stat/inf5.html 
We have look at this site and it did not help us at all, with it only giving us the a = 0.05, we do not know how to work it out. There has been 4 of us working on this and no one can get it.

The probability is all the question wanted. If you have a more detailed question, kindly post.
We do not generally follow all your previous posts. 
The answer is just what a equals.