Listed below are the lead concentrations in g/g measured in different traditional medicines. Use a 0.10 significance level to test the claim that the mean lead concentration for all such medicines is less than 14 g/g.

Assume that the sample is a simple random sample.

22.5

11.5

5

5.5

11.5

5

8

17.5

10

9

QUESTIONS:

1. Determine the Test Statistic? __________ (Round to two decimal placesd as needed.)

2. Determine the P-value? __________ (Round to three decimal places as needed.)

3. State the conclusion?

(Reject or Fail to reject)_________________h0. There is _____________(sufficient or not sufficient) evidence to conclude that the mean lead concentration for all such medicine is _______ (less than, greater than) 14ug/g?