7. [15 Points] DETAILS STATSBYLCH 20.3A.D10.CHDS.S. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Biology students in Washington State studied the relationship between the height of Douglas fir trees (m) and their circumference (m). The circumference was measured at chest height. (a) If the biology students nd the average height of their sample of Douglas r trees, that measure will represent a statistic. True False (b) The biology students recorded the data below. m \"- n \"n I_ USE SALT Does a linear regression model make sense for these data? Yes No (c) Calculate the slope. (Round your answer to four decimal places.) Calculate the yintercept. (Round your answer to four decimal places.) (d) For every 1-m increase in circumference of a Douglas r tree. the height increases by 9.4573 m. True False