A sample sequence of 43 products is selected (in order) from an assembly line. Each product is examined and judged to be either acceptable or defective. A total of 34 of these products were found to be acceptable, and the other 9 were found to be defective. The number of runs was 7. The runs test is to be used at the 0.05 significance level to test for randomness. Find the value of the test statistic used in this test, and round it to 3 places after the decimal point (if necessary)