75. Asthma and Quality of Life. A study examined the relationship between perceived neighborhood problems, quality of life, and mental health among adults with asthma.8 Among those reporting the most serious neighborhood problems, the 95% confidence interval for the population mean quality of life score was (2.7152, 9.1048).
8.1.75
(a) (b) 5.91 (c) 3.1948. We can estimate the true mean quality of life score within 3.1948 with 95% confidence. (d) 9.78