Question

Weston Listed below are the lead concentrations in wo measured in different vaditional medicines. Use a 0.10 significance level to test the claim that the mean lead concentration for all such medicines is less than 14 Assume that the sample is a simple random sample 10.5 11 125 16 6.5 5 22.5 Assuming all conditions for conducting a hypothesis tos are met, what are the nul and tomative hypotheses? OAH: 1400 OB. H: 14 H14 polo H: 140 OG H > 140 ODH 14 H14/ H, με 14 μου Determine the test statistic (Round to two decimal places as needed) Determine the P-value (Round to three decimal places as needed) State the final conclusion that addresses the original claim. Ho. There is evidence to conclude that the mean lead concentration for all such medicino in

Answer 1

A B с л 6 S.NO (X) (X-X BAR)^2 0.01 7 1 10.5 00 2 11 0.16 9 3 12.5 3.61 10 4 16 29.16 11 5 6.5 16.81 12 6 5 31.36 13 7 22.5 141.61 13 5.76 14 8 15 9 16 10 17 SUM 18 MEAN 19 ST. DEV 3 57.76 6 21.16 106 307.4 10.6 5.84428 STDEV(B7:B16)

Given 2 = 16 l=14 S 5.8443 d - 1049 n=10 -3.4 to all sin Ho : Ilsiu Mg19 Hi: 1414 dig lg 10.6-14 - 1.84 5.8443/50 1.84813 p-vale P[t q 4-1.84] =P[ta > 1.84] eising Excel = F. DISERT (1.84,9)] = 0.049 P = 0.049 <a 0.1 Reject Ho Reject Ho. There that the mean medicines is Sufficient evidence conclude lead concentration 14 lg lg for au such less than