An ecologist is interested in exploring the relationship between pollination rate and the number of bees present at apple orchards. The relationship is: (Pollination rate) with r = 0.80. = O 372.8 +14.4 x (bees) The best interpretation of the slope is: the increase in the mean pollination rate for a unit increase in the number of bees is 14.4 the estimated mean pollination rate is 372.8 when the number of bees = : 0 the increase in the mean pollination rate for a unit increase in the number of bees is 372.8 the estimated mean pollination rate is 14.4 when the number of bees = 0