Consider the following table summarizing the speed limit of a certain road and the number of accidents occurring on that road in January.
Posted speed limit | 52 | 48 | 41 | 37 | 21 | 24 |
Reported number of accidents | 26 | 27 | 22 | 15 | 17 | 12 |
1) Find the slope of the regression line predicting the number of accidents from the posted speed limit.Round to 3 decimal places.
2) Find the intercept of the regression line predicting the number of accidents from the posted speed limit. Round to 3 decimal places.
3) Predict the number of reported accidents for a posted speed limit of 30mph. Round to the nearest whole number.
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