Question

Consider the following table summarizing the speed limit of a certain road and the number of...

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.

Math   Statistics-And-Probability   
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