Consider the following printout. Suppose a? two-tailed test is desired. Find the
ID: 3054908 • Letter: C
Question
Consider the following printout. Suppose a? two-tailed test is desired. Find the? p-value for the test.
?HYPOTHESIS: MEAN OF X
equals=
x
X
equals=
gpa
SAMPLE MEAN OF X
equals=
2.9532.953
SAMPLE VARIANCE OF X
equals=
0.2270.227
SAMPLE SIZE OF X
equals=
167
HYPOTHESIZED VALUE? (x)
equals=
3
Xminus?x
equals=
negative 0.047?0.047
z
equals=
negative 1.28?1.28
A.
pequals=0.2010.201
B.
pequals=0.10.1
C.
pequals=0.7990.799
D.
pequals=0.9
Given
Upper H 0H0?:
mu?equals=?25,
Upper H Subscript aHa?:
mu?not equals??25,
and
pequals=0.0420.042.
Do you reject or fail to reject
Upper H 0H0
at the 0.01 level of? significance?
A.
reject Upper H 0H0
B.
fail to reject Upper H 0H0
C.
not sufficient information to decide
Which information is not shown on the screen? below?
A calculator screen displays the following information: Z Interval left parenthesis 21.817 comma 26.083 right parenthesis; x overbar equals 23.95; S x equals 8.205532843; n equals 40.
A.
the sample standard deviation
B.
the confidence level
C.
the sample size
D.
the sample mean
?HYPOTHESIS: MEAN OF X
equals=
x
X
equals=
gpa
SAMPLE MEAN OF X
equals=
2.9532.953
SAMPLE VARIANCE OF X
equals=
0.2270.227
SAMPLE SIZE OF X
equals=
167
HYPOTHESIZED VALUE? (x)
equals=
3
SAMPLE MEAN OFXminus?x
equals=
negative 0.047?0.047
z
equals=
negative 1.28?1.28
Explanation / Answer
(A) Correct answer is :
The p-value of the two-tailed test is 0.2010.
(B) Correct answer is :
B. We fail to reject H0H0
(C) Correct answer is :
B confidence interval is not shown