Question 1193684: Listed below are the lead concentrations (in vg/g) measured in different Ayurveda medicines,
Ayurveda is a traditional medical system commonly used in India. The lead concentrations listed here
are from medicines manufactured in the United States. Assume that a simple random sample has
been selected. Use a 0.10 significance level to test the claim that the mean lead concentration for all
such medicines is less than 14.0 ug/g.
U
2.99
6.50
6.03
5.50
20.48
7.48
12.03
20.46
11.49
17.54
What is the null and alternative hypotheses?
H0:
H1:
What is the test statistic?
What is the P Value?
State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim ______ (fail to reject, accept,reject) the hypothesis.There _______ (is,is not)sufficient evidence at the 0.10 significance level to _______(support, warrant rejection of) the claim that the mean lead concentration for all Ayurveda medicines manufactured in the United States is less than 14.0 /
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! Ho: mean is >=14.0
Ha: mean is < 14.0
alpha is 0.10 p{reject Ho|Ho true}
test is a t (0.90, df=9)
critical value t<-1.383. mean is 11.05 sd is 6.46
calculation is t=(11.05-14.0)/6.46/ sqrt(10)
=-1.44
reject Ho and conclude there is sufficient evidence to reject Ho and that the claim that the mean lead concentration is less than 14.0
p-value is 0.09
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