The following data represent weights in kilograms of maize harvest from a random sample of 72 experimental plots on St. Vincent, an island in the Caribbean (Reference: B. G. F. Springer, Proceedings, Caribbean Food Corps. Soc., Vol. 10, pp. 147-152). 7.8 9.1 9.5 10.0 10.2 10.5 11.1 11.5 11.7 11.8 12.2 12.2 12.5 13.1 13.5 13.7 13.7 14.0 14.4 14.5 14.6 15.2 15.5 16.0 16.0 16.1 16.5 17.2 17.8 18.2 19.0 19.1 19.3 19.8 20.0 20.2 20.3 20.5 20.9 21.1 21.4 21.8 22.0 22.0 22.4 22.5 22.5 22.8 22.8 23.1 23.1 23.2 23.7 23.8 23.8 23.8 23.8 24.0 24.1 24.1 24.5 24.5 24.9 25.1 25.2 25.5 26.1 26.4 26.5 26.7 27.1 29.5 USE SALT (a) Compute the five-number summary. min Q1 (b) Compute the interquartile range. median Q3 max (c) Make a box-and-whisker plot. 30- 20 40 30 20 10 10 40 30 30 20 10 O 20 10 O (d) Discuss the distribution. Does the lower half of the distribution show more data spread than the upper half? The upper half shows slightly more spread. The lower half shows much more spread. The lower half shows slightly more spread. The upper half shows much more spread.