AP Statistics teachers from across the country meet annually in Kansas City to score AP Statistics exams. One social event that many teachers participate in is the annual Prediction Fun Run. Prior to the race, the teachers predict how long it will take them to complete the 1.96-mile long course. During the event, they are timed and their actual finishing times are paired with their predicted times. Here is a scatterplot of the results. - Screen shot of the scatter plot and questions below! I'm pretty sure I have the work right, I just need some answers to compare it to!

Thank you very very much!!!

Answer(a) one needs to learn from experts and be determined to be the best in the field;

The answer is    (d) 7/2======we have    we also  have an integral      notice how function f splits up at x = 0. there's a left piece and a right pieceso we'll need to do the same thing with our integral: split it at x = 0we use a property of integrals that allows us to split up and sum:     notice that for the piecewise function f, the function has the equationf(x) = x when x  ≤ 0. so for the integral  , f(x) = x so it changes into      for the piecewise function f, the function has the equationf(x) = x+1  when x  > 0. for the integral  , we have    therefore, back to our splitted integral:    

Dhope it