5 13.5 9.5 13 18.5 12 15 22 2.5 2.5 8.3.21-E           Listed below are the lead concentrations in mu ​g/g measured in different traditional medicines. Use a 0.01   significance level to test the claim that the mean lead concentration for all such medicines is less than 15   mu ​g/g. Assume that the sample is a simple random sample.   5       13.5       9.5       13       18.5       12       15       22       2.5       2.5     Assuming all conditions for conducting a hypothesis test are​ met, what are the null and alternative​ hypotheses?     A. Upper H 0 ​: mu equals15   mu ​g/g Upper H 1 ​: mu not equals15   mu ​g/g   B. Upper H 0 ​: mu greater than15   mu ​g/g Upper H 1 ​: mu less than15   mu ​g/g   C. Upper H 0 ​: mu equals15   mu ​g/g Upper H 1 ​: mu less than15   mu ​g/g   D. Upper H 0 ​: mu equals15   mu ​g/g Upper H 1 ​: mu greater than15   mu ​g/g

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5
13.5
9.5
13
18.5
12
15
22
2.5
2.5

8.3.21-E
 
 
 
 
 
Listed below are the lead concentrations in
mu
​g/g

measured in different traditional medicines. Use a

0.01
 

significance level to test the claim that the mean lead concentration for all such medicines is less than

15
 
mu
​g/g.
Assume that the sample is a simple random sample.
 
5
     
13.5
     
9.5
     
13
     
18.5
     
12
     
15
     
22
     
2.5
     
2.5
 
 
Assuming all conditions for conducting a hypothesis test are​ met, what are the null and alternative​ hypotheses?
 
 
A.
Upper H 0
​:
mu

equals15

 
mu
​g/g
Upper H 1
​:
mu

not equals15

 
mu
​g/g
 
B.
Upper H 0
​:
mu

greater than15

 
mu
​g/g
Upper H 1
​:
mu

less than15

 
mu
​g/g
 
C.
Upper H 0
​:
mu

equals15

 
mu
​g/g
Upper H 1
​:
mu

less than15

 
mu
​g/g
 
D.
Upper H 0
​:
mu

equals15

 
mu
​g/g
Upper H 1
​:
mu

greater than15

 
mu

​g/g

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