A sample sequence of 54 products is selected (in order) from an assembly line. Each product is examined and judged to be either acceptable or defective. A total of 43 of these products were found to be acceptable, and the other 11 were found to be defective. The number of runs was 11. 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) Test statistic