#1) Consider the following table summarizing the speed limit ofa certain road and the number of accidents occurring on that roadin January
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Posted Speed Limit | 51 | 48 | 43 | 35 | 22 | 20 | Reported Number of Accidents | 25 | 29 | 25 | 17 | 19 | 14 |
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a) Find the slope of the regression line predicting the numberof accidents from the posted speed limit. Round to 3 decimalplaces.
b) Find the intercept of the regression line predicting thenumber of accidents from the posted speed limit. Round to 3decimal places.
c) Predict the number of reported accidents for a posted speedlimit of 43mph. Round to the nearest whole number.
#2) Consider the following:
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X | 37 | 60 | 73 | 104 | 124 | Y | 205 | 228 | 170 | 121 | 105 |
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a) What is slope of the regression line predicting Y from X,rounded to 2 decimal places?
b) What is the intercept of the regression line predicting Yfrom X, rounded to 2 decimal places?
c) What is the correlation between X and Y, rounded to 2decimal places?
