The given alternate possible way given in the question is not good as the sample does not follow the conditions of the definition of SRS in the study to select a systematic random sample of 200 pine trees along highway 34.
SRS is a group or sample size of "n" objects in a population of "n" objects in which all the possible samples would have equal chances to occur or happen.
The fact that the sample was not taken randomly and has not been selected in such a way that each tree has equal chances to happen.
The SRS is not possible to obtain as it does not follow the term and conditions of SRS.
It creates a bias in the study.
In the alternate case, There 200 pine trees sample is taken from near the highway, which can have fewer chances to be infected or can have more infected.
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