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. what is the comparison distribution's standard deviation? a) 0.45b) 0.67c) 1.51d) 2.27