You draw one observation from a normal distribution with known variance 1. You want to test if mu = 0.

a) Find c such that if you reject H0 when |x| > c, you get alfa to be 0.05.

b) With this rejection region, calculate beta (the probability of making a type II error) if the true value of mu is 0.2,

Answer in the form 3.54,0.64 using 2 decimals.

please help, don't understand without n ?

Thanks in advance