Question 1 (10 Marks) One hundred random quadrants are taken from each of the four adjacent fields from a highland area that has been burnt 4, 3, 2, and 1 years ago and the presence of weed species, Imperata cylindrica, recorded in each with the results given as proportion in each burnt strata. Test at 5% significance level, whether there is a relationship between the discrete variable 'years since burnt" and the presence of Imperata cylindrica. (For this question maintain 3 decimal places across all the calculation steps to minimize errors.) Years since Proportion of quadrants with Imperata burnt cylindrical 4 0.44 3 0.36 2 0.40 0.28