Listed below are the lead concentrations in ug/g measure in different traditions medicines. Use a 0.10 significance level to test the claim that the mean concentration for all such medicines is less than 20 ug/g . Assume that the sample is a simple random sample .

Listed below are the lead concentrations in pg/g measured in different traditional medicines. Use a 0.10 significance level to test the claim that the mean lead c sample 17 145 65 165 195 15 21 3 21.5 22 Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? O A. Ho H= 20 pg/g OB. Ho H= 20 pg/g H, H > 20 pg/g H, p 20 pg/g O D. Ho H = 20 pg/g H1 H