In the problem I am given :
n = 8 (sample size)
The random variable follows a normal law with a standard deviation of 0.25
The problem also states that we need to reject [tex]H_0[/tex] if or
I need to find the probability of a type I error.
What I've tried so far: (alpha represents my Type I error)
So I tried to start and find the probability of not in that interval.
which gives me
when I plug my numbers and isolate , i get
It seems to me that this value of Z can't be right since my table only goes to a maximum of 3.09.
As for the rest of the problem, I could use a tip or two about how to find P(u=5) and how to calculate the conditionnal probability.