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Category: People
Date Submitted: 10/08/2013 09:53 PM
Hypothesis
testing
exercises
Ch.
9
w
solutions
P.
390
(12th
edition)
No.
7a)
P.
390
No.
8a)
Surgery
patients
on
Extera:
• H0:
“Surgery
patients
using
the
drug
Extera
have
3,500
white
blood
cells
or
more
in
their
blood
sample.”
• Ha:
“Surgery
patients
using
the
drug
Extera
have
fewer
than
3,500
white
blood
cells
in
their
blood
sample.”
• Sample
mean:
xbar
=
3,000
white
blood
cells.
• Standard
error
=
300.
Sample
size
n
=
140.
• You
have
chosen
α
=
0.05.
• Will
you
reject
H0
or
fail
to
reject?
P.
403
No.
15a-‐c
1
RealMax
real
estate
sale
system:
• H0:
“The
mean
profit
per
day
for
individuals
using
the
RealMax
real
estate
sale
system
is
$300
or
less.”
• Ha:
“The
mean
profit
per
day
for
individuals
using
the
RealMax
real
estate
sale
system
is
greater
than
$300.”
• Sample
mean:
xbar
=
$500.
• Standard
error
=
50.
Sample
size
n
=
140.
• You
have
chosen
α
=
0.1.
• Will
you
reject
H0
or
fail
to
reject?
Dunlap
tennis
balls:
• H0:
“The
rebound
of
Dunlap
tennis
balls
equals
55
inches.”
• Ha:
“The
rebound
of
Dunlap
tennis
balls
is
unequal
55
inches.”
• Sample
mean:
xbar
=
42...