87 tutors couldn't help me before, so I'm trying one last time just in case someone understands and can help

Please with me 12.25, 12.50, and 12.75

I uploaded pictures showing how I got answers for the first 2, but error messages for the rest

and picture of the question

Since, level of significance is given, we have to calculate critical value at first. Now, So, Type II Error when , =12 is P[Type I Error] = 0.01 = P[Rejecting Ho | H, is true] = 0.01 P[Type II Error] = P[x