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Math Problems
Precalculus
Partial sums: mixed review
The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution.
\newline
Test
H
0
:
p
=
0.28
H_{0}: p=0.28
H
0
:
p
=
0.28
vs
H
a
:
p
<
0.28
H_{a}: p<0.28
H
a
:
p
<
0.28
when the sample has
n
=
900
n=900
n
=
900
, and
p
^
=
0.226
\hat{p}=0.226
p
^
=
0.226
with
S
E
=
0.01
S E=0.01
SE
=
0.01
.
\newline
Find the value of the standardized
z
z
z
-test statistic.
\newline
Round your answer to two decimal places.
\newline
z
=
z=
z
=
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Find the value of
x
x
x
in the equation below.
\newline
18.4
=
5
+
x
18.4=5+x
18.4
=
5
+
x
\newline
Answer:
x
=
x=
x
=
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Convert the decimal below to a fraction in simplest form.
\newline
0.68
0.68
0.68
\newline
Answer:
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