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This question was created from STAT 200_Final_Exam_Spring_2019_OL1.pdf

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This question was created from STAT 200_Final_Exam_Spring_2019_OL1.pdf
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20. A scientist believes that the frequency of cricket chirping is a good predictor of the ambient
temperature . A random sample produced the following data where * is the number of cricket chirps It
one minute and " is the ambient temperature in Fahrenheit
227
1.50
TO
210
1.85
1.37
72
171
( a) Find an Equation of the least squares regression line . Round the slope and V-intercept
value to two decimal places . Describe method for Obtaining results .
1 6; Based on the Equation from part ( a ) . what is the predicted temperature when a cricket chirps 300
tunes in one minute ? Show all work and justifi Your anger .
( C ) Based on the Equation from part (a ) . what is the predicted temperature when a cricket chirps 140
tunes In one minute ? Show all Work and justify YOUR answer .
[ d] Which predicted temperature that you calculated for ( b ) and Icj do you think is closer to the true
temperature and why?"

 
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