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Question

Read directly from the chart:

Intercept = 6,223

Slope = 103.27

R2 =

0.6581


Use Excel to predict the number of minutes spent by a 37-year old shopper. Enter = followed by the regression formula. Enter the intercept and slope into the formula by clicking on the cells in the regression output with the results.


*I used (103.27*37) +37 = 3858-Is this correct?


* Is it appropriate to use this data to predict the amount of time that a 68-year-old will be on the Internet? Yes (is this correct?)


If yes, what is the amount of time, if no, why?  

 

I used (103.27*68)+68-Is this correct?


Thank you, and let me know if you need more info

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