(Get Answer) – Interpret the slope coefficient in each of the above estimated
1.
yhat = 14 + 7.34x
yhat = 3 + 25 In(x)
In(yhat) = 2 + 0.08x; se = 0.06
In(yhat) = 2.5 + 0.48 In(x); se = 0.16
a.
Interpret the slope coefficient in each of the above estimated models, when x increase by one unit in Models 1 and 3 and by 1% in Models 2 and 4. (Round your answers to 2 decimal places.)
Model 1: yhat increases by units. 7.34 ;
Model 2: yhat increases by about units. 0.25
Model 3: yhat increases by about percent. 8.00
.
Model 4: yhat increases by about percent. .48
2.
b.
For each model, what is the predicted change in y when x increases by 6%, from 10 to 10.6? 
Model 1: yhat increases by units. 4.40
Model 2: yhat increases by units. 1.46
Model 3: yhat increases by percent. 4.92
Model 4: yhat increases by percent. 2.84
3. Consider the sample regressions for the linear, the logarithmic, the exponential, and the loglog models. For each of the estimated models, predict y when x equals 57. (Do not round intermediate calculations. Round your answers to 2 decimal places.) 

Response Variable: y 
Response Variable: ln(y) 


Model 1 
Model 2 
Model 3 
Model 4 
Intercept 
15.13 
−5.51 
1.22 
0.83 
X 
1.42 
NA 
0.05 
NA 
ln(x) 
NA 
24.45 
NA 
0.77 
s_{e} 
19.54 
16.10 
0.12 
0.10 

yhat 
Model 1 
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Model 2 
[removed] 
Model 3 
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Model 4 
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4. Eva, the owner of Eva’s Second Time Around Wedding Dresses, currently has five dresses to be altered, shown in the order in which they arrived:
If Eva uses the shortest processing time first priority rule to schedule these jobs, what will be the average job tardiness?
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2 hours 




5. Eva, the owner of Eva’s Second Time Around Wedding Dresses, currently has five dresses to be altered, shown in the order in which they arrived:
If Eva uses the shortest processing time first (SPT) priority rule to schedule these jobs, what will be the average completion time?







