Determine how to apply the fourth basic step in a statistical study in this situation. Choose the correct answer below. A. If the percentage of trees that have a certain parasitic infestation in the sample is greater than 50%, then the researcher can be confident that all trees have a certain parasitic infestation. B. If the researcher followed correct procedures, he or she can be confident that the sample statistic is equal to the average number of trees that nothing have a certain parasitic infestation. C. The sample statistic provides no useful information to the researcher in this situation. D. The researcher should use the sample statistic as an estimate for the population value of the average number of trees that have a certain parasitic infestation and then use the methods of statistics to determine how good that estimate is