9.7. Beall (1940) counted beet webworm larvae on 325 plots in each of five areas with these results: No. of larvae Plot 1 Plot 2 Plot 3 Plot 4 Plot 5 0 117 205 162 227 55 1 87 84 88 70 72 2 50 30 45 21 61 3 4 327220 5698 38 4 23 6 54 21 2 52 1 12 18 21 16 14 9 2 1 (a) Fit a negative binomial distribution to each of these data sets and determine what spatial pattern these insects show. (b) Design a sequential sampling scheme for these insects, based on the need to detect low infestations ( 1.0 larvae per plot). (c) Determine a stopping rule for this sequential scheme and plot the resulting sequential sampling scheme.