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 18 g/g.Assume that the sample is a simple random sample.

131320.521518.518.57.510.520.5

1) Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses,

H0: ___ 18 and H1: ___18?

2) What is the t test statistic? (Round to two decimal places)

3) What is the p value? (Round to three decimal places)

4) State the final conclusion that addresses the original claim. Do we ___a) reject or b) fail to reject the H0 hypothesis?

5) Is there ____a) sufficient or b) not sufficient evidence to conclude that the mean lead concentration for all such medicines is ______a) equal to b) less than c) greater than d) not ___ 18g/g.