1. A bridge is to be built across a deep canyon. An engineer is interested in determining the distribution of the random variable X, the maximum wind speed per day at the site so that the bridge can be designed to withstand potential stresses that will be placed upon it from this source.

2. A botanist thinks that indoleacetic acid is effective in stimulating the formation of roots in cuttings from lemon trees. In an experiment to verify this contention, two groups of cuttings are to be used. One group is to be treated with a dilute solution of indoleacetic acid; the other is given only water. Later a comparison of the root systems of the two groups will be made.