Question
1/
1/
1point
The
average
credit
card
debt
for
college
seniors
is
$16,601
with
a
standard
deviation
of
$4100.
What
is
the
probability
that
a
sample
of
35
seniors
owes
a
mean
of
more
than
$18,000? Round
answer
to
4
decimal
places.
Answer:
.0218
v
w
Hide
question
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feedback
New
SD
=
4100/SQRT(35)
P(x
>
18000),
using
Excel
=1-NORM.DIST(18000,16601,693.0265,TRUE)
Question
18
0/
1
point
The
time
a
student
sleeps
per
night
has
a
distribution
with
mean
5.9
hours
and
a
standard
deviation
of
0.4
hours.
Find
the
probability
that
average
sleeping
time
for
a
randomly
selected
sample
of
48
students
is
more
than
6
hours
per
night.
Answer:
(round
to
4
decimal
places)
.0384
%
(0.0416,.0416)