Question

Interpreting a Computer Display. In Exercises 9–12, refer to the display obtained by using the paired data consisting of Florida registered boats (tens of thousands) and numbers of manatee deaths from encounters with boats in Florida for different recent years (from Data Set 10 in Appendix B). Along with the paired boat, manatee sample data, StatCrunch was also given the value of 85 (tens of thousands) boats to be used for predicting manatee fatalities.

Predicting Manatee Fatalities Using x = 85 (for 850,000 registered boats), what is the single value that is the best predicted number of manatee fatalities resulting from encounters with boats?

Short answer

The single value that is the best-predicted number of manatee fatalities when there are 850,000 registered boats is 70.5.

Step-by-step solution

Given information

Results are obtained for the linear relation between the variables “number of registered boats” and “number of manatee deaths” using StatCrunch.

Step 2:Single predicted value

It can be observed in the results table that the single predicted value of Y(number of manatee fatalities) for the given value of X(registered boats) at 850,000 is obtained as 70.481772 (approximately 70.5).

Thus, the predicted value of Y (number of manatee fatalities) is 70.5.