Use the calculator displays to the right to make a decision to reject or fail to reject the null hypothesis at a significance level of alpha equals0.01 . ​Z-Test   ​Z-Test   Inpt: Data Stats       mu not equals 70   mu 0 ​:70     zequals negative 1.76531682   sigma ​:4.75     pequals 0.07751053   x overbar ​:68.75     x overbar equals68.75   ​n:45     nequals 45   mu : not equals mu 0 less than mu 0 greater than mu 0           Calculate Draw       Choose the correct answer below.     A. Since the​ P-value is less   than alpha ​, reject   the null hypothesis.   B. Since the​ P-value is greater   than alpha ​, fail to reject   the null hypothesis.   C. Since the​ P-value is greater   than alpha ​, reject   the null hypothesis.   D. Since the​ P-value is less   than alpha ​, fail to reject   the null hypothesis.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Use the calculator displays to the right to make a decision to reject or fail to reject the null hypothesis at a significance level of

alpha

equals0.01

.
​Z-Test
 
​Z-Test
 
Inpt: Data
Stats
 
 
 
mu not equals

70

 
mu 0

​:70

 
 
zequals

negative 1.76531682

 
sigma

​:4.75

 
 
pequals

0.07751053

 
x overbar

​:68.75

 
 
x overbar

equals68.75

 
​n:45
 
 
nequals

45

 
mu :
not equals mu 0
less than

mu 0

greater than

mu 0

 
 
 
 
 
Calculate Draw
 
 
 
Choose the correct answer below.
 
 
A.
Since the​ P-value is
less
 

than

alpha
​,
reject
 
the null hypothesis.
 
B.
Since the​ P-value is
greater
 

than

alpha
​,
fail to reject
 
the null hypothesis.
 
C.
Since the​ P-value is
greater
 

than

alpha
​,
reject
 
the null hypothesis.
 
D.
Since the​ P-value is
less
 

than

alpha
​,
fail to reject
 

the null hypothesis.

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