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 16 ug/g. Assume that the sample is a simple random sample. 16.5 6 9 4.5 13 12 16.5 16 20.5 10.5 Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? O A. Ho: H> 16 ug/g O B. Ho: H = 16 pig/g H1 : H 16 ug/g O C. Ho: H= 16 ug/g O D. Ho: H = 16 pig/g H, : u