A health psychologist tests a new intervention to determine if
it can change healthy behaviors among siblings. To conduct the this
test using a matched-pairs design, the researcher gives one sibling
an intervention, and the other sibling is given a control task
without the intervention. The number of healthy behaviors observed
in the siblings during a 5-minute observation were then recorded.
Intervention Yes 6, 2, 5,6,6,5 No 4,5,4,5,4,4
(a) Test whether or not the number of healthy behaviors differ
at...