Consider the following sample data a Find the predicted valu

Consider the following sample data:

a. Find the predicted value for y if x equals 10, 15, and 20.

Solution

Using technology, we get              
              
slope =    1.462382445          
intercept =    9.148902821          
              
Thus, the regression line is              
              
y^ =    1.462382445x + 9.148902821

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a)

Thus, if x =    10  
      
Then      
      
y^ =    23.77272727   [ANSWER]

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b)

Thus, if x =    15  
      
Then      
      
y^ =    31.0846395   [ANSWER]

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c)

Thus, if x =    20
  
Then  
  
y^ =    38.39655172 [ANSWER]