The authors of a paper investigated whether water temperature was related to how far a salamander would swim and whether it would swim upstream or downstream. Data for 14 streams with different mean water temperatures where salamander larvae were released are given (approximated from a graph that appeared in the paper).The two variables of interest are x = mean water temperature (°C) and y = net directionality, which was defined as the difference in the relative frequency of the released salamander larvae moving upstream and the relative frequency of released salamander larvae moving downstream. A positive value of net directionality means a higher proportion were moving upstream thandownstream. A negative value of net directionality means a higher proportion were moving downstream than upstream.y0.30.2Mean Temperature (x)0.10.0-0.16.228.0158.6710.6112.511.9412.5518.0318.24(a) Construct a scatterplot of the data.19.9420.319.0217.7819.67USE SALTNet Directionality (y)10-0.08150.25-0.140.000.080.03y0.30.20.1BREE0.0-0.1X20-0.070.290.230.240.190.140.050.0720y0.30.20.10.0-0.1510155101520How would you describe the relationship between x and y?O There is an outlier in the lower right of the window. If we disregard that outlier, then there is a positive linear relationship between mean temperature and net directionality.O There is an outlier in the lower left of the window. If we disregard that outlier, then there is a negative linear relationship between mean temperature and net directionality.O There is an outlier in the upper right of the window. If we disregard that outlier, then there is a negative linear relationship between mean temperature and net directionality.● There is an outlier in the upper left of the window. If we disregard that outlier, then there is a positive linear relationship between mean temperature and net directionality.(c) What value of net directionality would you predict for a stream that had mean water temperature of 9°C? (Round your answer to four decimal places.)y0.30.2.0.10.0-0.1(b) Find the equation of the least-squares line describing the relationship between y = net directionality and x = mean water temperature. (Round your numerical values to four decimal places.)ŷ =5101520X

Answered: Image /qna-images/answer/bee4d03c-d765-45c5-9743-4ae5009cae57.jpg

Answered: (b) Find the equation of the…

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter4: Writing Linear Equations

Section: Chapter Questions

Problem 14CR

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