In: Statistics and Probability
| 
 The following sample observations were randomly selected. (Round your answers to 2 decimal places.)  | 
| 
 X:  | 
 4  | 
 5  | 
 3  | 
 6  | 
 10  | 
| 
 Y:  | 
 9.8  | 
 10.6  | 
 8  | 
 15.4  | 
 19.6  | 
| a. | The regression equation is Yˆ Y^ = + X | 
| b. | When X is 8 this gives Yˆ Y^ = | 
Solution-
a) the regression equation is -
y (hat) = 3.18 + ( 1.70 • X)
b) Let X = 8,
putting in regression equation-
= 3.18 + ( 1.70 × 8)
16.78
for X = 8 y(hat ) is 16.78
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◆ regression equation calculation-
