Answer
(a) 12
(b) 4
Work Step by Step
(a) We first write the fraction as a decimal:
$$ \frac{13}{1000} =.013\ inches $$
Finding the .013 inch diameter entry in the table, we find that the corresponding test strength is $\fbox{12 pounds.}$
(b) Finding the .008 inch diameter entry in the table, we find that the corresponding test strength is $\fbox{4 pounds.}$