Listed below are the lead concentrations in mu ​g/g measured in different traditional medicines. Use a 0.10   significance level to test the claim that the mean lead concentration for all such medicines is less than 20   mu ​g/g. Assume that the sample is a simple random sample.   3.5       15.5       16.5       15       13       12.5       21.5       16.5       22.5       16.5     Assuming all conditions for conducting a hypothesis test are​ met, what are the null and alternative​ hypotheses?     A. Upper H 0 ​: mu greater than20   mu ​g/g Upper H 1 ​: mu less than20   mu ​g/g   B. Upper H 0 ​: mu equals20   mu ​g/g Upper H 1 ​: mu less than20   mu ​g/g   C. Upper H 0 ​: mu equals20   mu ​g/g Upper H 1 ​: mu not equals20   mu ​g/g   D. Upper H 0 ​: mu equals20   mu ​g/g Upper H 1 ​: mu greater than20   mu ​g/g

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Listed below are the lead concentrations in

mu
​g/g

measured in different traditional medicines. Use a

0.10
 

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

20
 
mu
​g/g.
Assume that the sample is a simple random sample.
 
3.5
     
15.5
     
16.5
     
15
     
13
     
12.5
     
21.5
     
16.5
     
22.5
     
16.5
 
 
Assuming all conditions for conducting a hypothesis test are​ met, what are the null and alternative​ hypotheses?
 
 
A.
Upper H 0
​:
mu

greater than20

 
mu
​g/g
Upper H 1
​:
mu

less than20

 
mu
​g/g
 
B.
Upper H 0
​:
mu

equals20

 
mu
​g/g
Upper H 1
​:
mu

less than20

 
mu
​g/g
 
C.
Upper H 0
​:
mu

equals20

 
mu
​g/g
Upper H 1
​:
mu

not equals20

 
mu
​g/g
 
D.
Upper H 0
​:
mu

equals20

 
mu
​g/g
Upper H 1
​:
mu

greater than20

 
mu

​g/g

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