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Assume that a simple random sample has been selected and test the given claim. Listed below are the lead concentrations in ug / g measured

Assume that a simple random sample has been selected and test the given claim. Listed below are the lead concentrations in ug / 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 ug / g. 4.0 5.5 6.5 6.0 20.5 7.5 11.5 20.0 11.5 17.0 Identify the null and alternative hypotheses for this test. O A. Ho: H = 15 ug/ g H1: H# 15 pg/ g O B. Ho H= 15 pg/g H1 : H 15 pg/ g OD. Ho: H

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