Listed below are the lead concentrations in muμ​g/g measured in different traditional medicines. Use a 0.010.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 1515 muμ​g/g. Assume that the lead concentrations in traditional medicines are normally distributed.   1212      22.522.5      88      33      9.59.5      22.522.5      12.512.5      13.513.5      10.510.5      10.510.5    What are the null and alternative​ hypotheses?     A. Upper H 0H0​: muμequals=1515 muμ​g/g Upper H 1H1​: muμless than<1515 muμ​g/g Your answer is correct.   B. Upper H 0H0​: muμequals=1515 muμ​g/g Upper H 1H1​: muμgreater than>1515 muμ​g/g   C. Upper H 0H0​: muμgreater than>1515 muμ​g/g Upper H 1H1​: muμless than<1515 muμ​g/g   D. Upper H 0H0​: muμequals=1515 muμ​g/g Upper H 1H1​: muμnot equals≠1515 muμ​g/g Determine the test statistic.   negative 1.33 ​(Round to two decimal places as​ needed.)   Determine the​ P-value: ?? ​(Round to three decimal places as​ needed.)

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Listed below are the lead concentrations in
muμ​g/g
measured in different traditional medicines. Use a
0.010.01
significance level to test the claim that the mean lead concentration for all such medicines is less than
1515
muμ​g/g.
Assume that the lead concentrations in traditional medicines are normally distributed.
 
1212     
22.522.5     
88     
33     
9.59.5     
22.522.5     
12.512.5     
13.513.5     
10.510.5     
10.510.5
  
What are the null and alternative​ hypotheses?
 
 
A.
Upper H 0H0​:
muμequals=1515
muμ​g/g
Upper H 1H1​:
muμless than<1515
muμ​g/g
Your answer is correct.
 
B.
Upper H 0H0​:
muμequals=1515
muμ​g/g
Upper H 1H1​:
muμgreater than>1515
muμ​g/g
 
C.
Upper H 0H0​:
muμgreater than>1515
muμ​g/g
Upper H 1H1​:
muμless than<1515
muμ​g/g
 
D.
Upper H 0H0​:
muμequals=1515
muμ​g/g
Upper H 1H1​:
muμnot equals≠1515
muμ​g/g
Determine the test statistic.
 
negative 1.33
​(Round to two decimal places as​ needed.)
 
Determine the​ P-value: ??
​(Round to three decimal places as​ needed.)
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