Studies show that if someone engages in some physical exercise, they are less likely to have
depression. However, what is not clear is whether the amount of exercise differs across people
with and without depression. We are interested to determine whether people who are depressed
significantly differ from non-depressed people in their weelly exercise participation. We ask 20
people with clinical depression and 20 people without clinical depression to report the minutes
they exercised in a one-week period.
What is the independent variable? Minutes of exercise in a week Minutes of exereise in a day
Depression score Depression status (clinically depressed vs. not clinically depressec) Number of
times exerelsing in a week Number of times exercising in a day What are the null and alternative
hypotheses (two-tailed test)? OH0:12=0,H1:12=/=0OH0:12=0,H1:12=0OH0:=/=0,H1:=0O Ho:
d=0,Hi:d=l=0OHO=0,H1=/=0OH0:=0,H1:=/=0.
Studies show that if someone engages in some physical exercise, they .pdf
1. Studies show that if someone engages in some physical exercise, they are less likely to have
depression. However, what is not clear is whether the amount of exercise differs across people
with and without depression. We are interested to determine whether people who are depressed
significantly differ from non-depressed people in their weelly exercise participation. We ask 20
people with clinical depression and 20 people without clinical depression to report the minutes
they exercised in a one-week period.
What is the independent variable? Minutes of exercise in a week Minutes of exereise in a day
Depression score Depression status (clinically depressed vs. not clinically depressec) Number of
times exerelsing in a week Number of times exercising in a day What are the null and alternative
hypotheses (two-tailed test)? OH0:12=0,H1:12=/=0OH0:12=0,H1:12=0OH0:=/=0,H1:=0O Ho:
d=0,Hi:d=l=0OHO=0,H1=/=0OH0:=0,H1:=/=0
