In 201] researcher Wendie Clubine analyzed Texas elementary school principal's percEptions of school gardening programs. She selected 110 potential respondents eligible for participation in the study: 35 elementary school principals listed at the National Gardening Association and T5 elementary school principals listed at the RainwatEr Educational Alliance for Learning. She mailed a pre+notice letter to all 110 potential respondents one week prior to emailing the rst invitation. A week later, she emailed the rst invitation for participation to all elementary school principals with two hyperlinks included, one to enter the questionnaire and one to opt out of the study. Two weeks later, she emailed a second invitation to those principals who had not completed the questionnaire emphasizing the importance of their contribution and the same two hyperlinks were included. Another two weeks later, she emailed a third invitation to those principals who had not completed the questionnaire furthering stressing the importance of their response. Forty ve principals decided to take the survey; however, I declined to participate in the study and did not answer any further question while 4 only answered selective questions. The Texas Principals' School Garden dataset provided contains the principals' answers to selective questions from Clubine (201]). If you point to the variable names in the rst row of the Excel document, you can read the full questions via comments. 1. The sampling ame is a list, map, or other specication of sampling units in the population from which a sample may be selected. Clubine's (201]) sarnpling frame consisted of registry lists available from the National Gardening Association and Rainwater Educational Alliance for Learning. Dening the target population is an important and often difcult part of the study. The target population is dened as the complete collection of observations the researcher wants to study. Figure 1.] summarizes the difference between sampling frame (green and black boxes), target population {blue box}, and sampled population (black box). Use Figure 1.1. to carefully describe Clubine's (2011} target population. Make sure you explain the difference among Clubine's target population, sampling frame, and the ultimate population that was sampled. (Points: 4}