In rocky mountain national park, many mature pine trees along highway 34 are dying due to infestation by pine beetles. scientists would like to use a sample of size 200 to estimate the proportion of the approximately 5000 pine trees along the highway that have been infested. it is not practical to use an srs in this setting. a possible alternative would be to use the first 200 pine trees along the highway as you enter the park. why isn't this a good idea?