The average lengths L of cellular phone calls in minutes from 1999 to 2004 are shown in the table below. Use the regression feature of a graphing utility to find a linear model for the data. Let t represent the year, with t = 9 corresponding to 1999. Use the model to predict the average lengths of cellular phone calls for the year 2012. Round your answer to two decimal places.
A) 5.00 minutes
B) 8.00 minutes
C) 4.00 minutes
D) 2.00 minutes
E) 3.00 minutes

Question

The average lengths L of cellular phone calls in minutes from 1999 to 2004 are shown in the table below.  Use the regression feature of a graphing utility to find a linear model for the data. Let t represent the year, with t = 9 corresponding to 1999. Use the model to predict the average lengths of cellular phone calls for the year 2012. Round your answer to two decimal places.
A) 5.00 minutes 
B) 8.00 minutes 
C) 4.00 minutes 
D) 2.00 minutes 
E) 3.00 minutes

Quizplus · Accepted Answer

The Answer of The average lengths L of cellular phone calls in minutes from 1999 to 2004 are shown in the table below.  Use the regression feature of a graphing utility to find a linear model for the data. Let t represent the year, with t = 9 corresponding to 1999. Use the model to predict the average lengths of cellular phone calls for the year 2012. Round your answer to two decimal places.
A) 5.00 minutes 
B) 8.00 minutes 
C) 4.00 minutes 
D) 2.00 minutes 
E) 3.00 minutes

The Average Lengths L of Cellular Phone Calls in Minutes