Anxiously-attached individuals in the general population tend to have low levels of satisfaction in

I couldn't find this anywhere in my text book please explain to me how to do it! Thank you!

Anxiously-attached individuals in the general population tend to have low levels of satisfaction in their romantic relationships (μ = 10, σ = 5, positively skewed distribution). A therapist interested in increasing relationship satisfaction provides a week-long relaxation seminar to 11 anxious individuals. After completing the seminar, relationship satisfaction in the sample averages 12.  
53)   What is the comparison distribution's standard deviation?
54)   What is the corresponding Z score for the sample's mean score on the comparison distribution?

55)   What is the shape of the comparison distribution?

56)   A 95% confidence interval is figured by finding  

57)   The 95% confidence interval  

58)   The 99% confidence interval is the region in a group of scores that  

59)   The first thing that needs to be done to compute the 95% confidence interval is to