Listed below are the lead concentrations in (μg/g) measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 19 μg/g. Assume that the lead concentrations in traditional medicines are normally distributed.
18 17.5 7.5 22.5 21.5 15.5 9 19.5 7 4

30005

yes ok                                            

answer: 5

step-by-step explanation:

since, the range is the difference between the lowest and highest values of the given sample space.

and, here the sample space = { 3, 1, 0, 4, 1, 4, 2, 3, 0, 5, 0, 1, 1, 2, 0, 4, 1,4, 4 ,2 ,3 ,2 ,0 ,1 ,4 }

here, the highest value of the given sample = 5

and, the lowest value = 0

therefore, the range of the sample space = 5 - 0 = 5

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey