Palisades Eco-Park is a small ecological reserve that admits a relatively small number of visitors on any day, but provides both educational and entertaining lectures, exhibitions, and opportunities to observe nature. The company has collected the following data on labor costs and number of visitors to the park over the last 30 months. Month Labor Cost Visitors 19 21 22 24 25 26 27 28 29 30 12345678901234567890123456 ========A122222222223 $26,320 2,200 $36,993 3,354 $40,742 3,638 $32,261 2,875 5 $35,483 3,071 $33,305 2,823 $32,643 2,853 $39,077 3,463 $39,315 3,572 10 $47,841 4,622 11 $42,974 3,851 12 $39,786 3,629 13 $35,111 3,126 14 $33,816 3,023 15 $37,687 3,246 16 $27,013 2,716 17 $31,257 4,396 18 $30,541 3,605 $28,125 3,121 20 $30,584 3,847 $26,190 2,588 $25,133 2,322 23 $29,451 4,228 $30,737 4,940 $28,664 3,354 $32,304 4,237 $29,206 3,869 $30,506 3,947 $28,989 3,250 $28,414 2,686 Req A and B Req C and D a. Estimate the labor costs assuming 3,000 visitors for the month using the results of a simple regression based on the 30 months of available data. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) b. What percentage of the variance in the data does the R-squared value explain? a. Labor cost b. The R-squared value suggests that the number of visitors only explains c. You learn that starting in month 16, the park started using a different, more automated system for interacting with visitors. Estimate the labor cost assuming 3,000 visitors using the results of a simple regression based on the data for months 16 through 30 only. (Do not round intermediate calculations and round your final answer to 2 decimal places.) d. What percentage of the variance in the data does the R-squared value explain? c. Labor cost d. The R-squared value suggests that the number of visitors only explains Show less