Fitting a straight line to a set of data yields the prediction line Y,-7-4X, The

Question

Fitting a straight line to a set of data yields the prediction line Y,-7-4X, The values of X used to find the prediction line range from 7 to 26. a. Snould this model be used to predict the mean value of Y when Xequals 8? b. Should this model be used to predict the mean value of Y when X equals 8? c. Should this model be used to predict the mean value of Y when X equals 0? d. Should this model be used to predict the mean value of Y when X equals 25? a. Should this model be used to predict the mean value of Y when Xequals 8 O No O Not enough information b. Should this model be used to predict the mean value of Y when X equals -8 O Yes O No Not enough information c. Should this model be used to predict the mean value of Y when Xequals 0? O No O Not enough information d. Should this model be used to predict the mean value of Y when X equals 25? O Yes O No Not enough information

Explanation / Answer

(a) Yes, since 8 is within the range of x

(b) No, since -8 is not within the range of x

(c) No, since 0 is not within the range of x

(d) Yes, since 25 is within the range of x.

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