The data show systolic and diastolic blood pressure of certain people. find the regression equation, letting the systolic reading be the independent (x) variable. find the best predicted diastolic pressure for a person with a systolic reading of 116. is the predicted value close to 62.8, which was the actual diastolic reading? use a significance level of 0.05.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.