At Westonci.ca, we make it easy to get the answers you need from a community of informed and experienced contributors. Explore thousands of questions and answers from a knowledgeable community of experts on our user-friendly platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.


9. Two statistics students went to a flower shop and randomly selected 12 carnations. When they got home,
the students prepared 12 identical vases with exactly the same amount of water in each vase. They put one
tablespoon of sugar in 3 vases, two tablespoons of sugar in 3 vases, and three tablespoons of sugar in 3
vases. In the remaining 3 vases, they put no sugar. After the vases were prepared, the students randomly
assigned one carnation to each vase and observed how many hours each flower continued to look fresh. A
scatterplot of the data is shown above. The least-squares regression line for these data is
= 180.8 + 15.8x.