)/
PL.*t+
Namer
Math 282 Section 1 Quiz #LO
April 29,?ALI
The placebo
effect
is particularly strong in patients with Parkinson's disease.
To understand the workings of the placebo effect, scientists made chemical
rneasurements at a key point in the brain when patients received
a placebo
that they thought was an active drug and also when no placebo was given.
The same six patients were measured
at different times and the differences,
with and
without the placebo,
were
found to have
r: -0.326 and
s - 0.181.
Is there significant evidence
of a difference between
the mean responses
with
and without the placebo? You may assume
here
the differences
are normally
distributed.
{-lo:
)= o
Hq: /jeo
X -J/o -o,3>(
*: 5/*
/du
oo,,l
?r/tx
o
.bb
]5< FP
- +,
+lq
a>t*tt4*-n
({r)
\.-/