Listed below are the lead concentrations in ug/g measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is...

identify the test statistics, p value and final conclusion.

Extracted text: Listed below are the lead concentrations in ug/g measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 11 ug/g. Assume that the sample is a simple random sample. 17 4 21 10 9.5 6. 2.5 6 0