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Find a 95% confidence interval for the slope of the model below with n=30. Coefficients: Estimate...

Find a 95% confidence interval for the slope of the model below with n=30.

Coefficients: Estimate Std.Error t value Pr(>|t|)
(Intercept) 6.968 1.117 6.24 0.000
Dose -0.4579 0.2587 -1.77 0.087



Round your answers to three decimal places.


Enter your answer; The 95% confidence interval, value 1 to Enter your answer; The 95% confidence interval, value 2

Math   Statistics-And-Probability   
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Answer #1

We have here,
      
b1=-0.4579  
sb1=0.2587  
n=30  
level of significance=   0.05  
Degree of freedom =n-2=   28  
t critical value =2.048  
Confidence interval for slope      


=(-0.988,0.072)

      
Lower limit of confidence interval=-0.988
Upper limit of confidence interval=0.072

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