(c) Find the linear correlation coefficient. Round your answer to 4 decimals. r = (d) Comment on whether a linear model is a good model. Explain why. This part will be hand graded. (e) Predict the breaking distance if you were going 65 miles per hour. Use your rounded values from part (b). Round your final answer to one decimal. feet (f) What speed would you be traveling at if you needed 200 feet to break? Use your rounded values from part (b). Round your final answer to two decimals. mph
(c) Find the linear correlation coefficient. Round your answer to 4 decimals. r = (d) Comment on whether a linear model is a good model. Explain why. This part will be hand graded. (e) Predict the breaking distance if you were going 65 miles per hour. Use your rounded values from part (b). Round your final answer to one decimal. feet (f) What speed would you be traveling at if you needed 200 feet to break? Use your rounded values from part (b). Round your final answer to two decimals. mph
ChapterP: Prerequisites
SectionP.6: The Rectangular Coordinate System And Graphs
Problem 2ECP
Related questions
Question
Transcribed Image Text:(c) Find the linear correlation coefficient. Round your answer to 4 decimals.
r =
(d) Comment on whether a linear model is a good model. Explain why. This part will be hand graded.
(e) Predict the breaking distance if you were going 65 miles per hour. Use your rounded values from part
(b). Round your final answer to one decimal.
feet
(f) What speed would you be traveling at if you needed 200 feet to break? Use your rounded values from
part (b). Round your final answer to two decimals.
mph
Transcribed Image Text:The following data represent the speed of a car (in miles per hour) and its breaking distance (in feet) on
dry asphalt.
Speed
Breaking Distance
30
40
50
60
70
80
65.4
89.9
104.2 128.3
140.4
167.6
(a) Draw a scatter plot.
180-
150-
120-
90-
60-
30-
10
10 20
30 40
50
60
70
80 90
Clear All Draw: Dot
(b) Find the least squares regresssion line. Round the slope and y-intercept to two decimals.
B(x) =
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