= Homework: C... Question 65, 8.3.21-E HW Score: 64.33%, 110 of 171 points o Save Part 2 of 4 O Points: 0 of 9 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 pg/g Assume that the sample is a simple random sample. 4 115 95 215 18 5.5 11 18 4 21 2 . . . . . Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? A. Ho H= 15 pg/g OB. Ho p= 15 pig/g H, p < 15 pg/g H1 p # 15 pg/g O C. Ho H= 15 pg/g OD. Ho p > 15 pig/g H, p > 15 pg/g Hy : p < 15 pg/g Determine the test statistic. (Round to two decimal places as needed.)