Question

In: Statistics and Probability

A fire insurance company wants to estimate the amount of fire damage in major residential fires...

A fire insurance company wants to estimate the amount of fire damage in major residential fires based on distance between the residence and the nearest fire station. The study is to be conducted in a large suburb of a major city, a sample of 16 recent fires in this suburb is selected.

–Explanatory Variable (x): Distance
–Response Variable (y): Damage

Give a 95% Confidence Interval for slope.

(  ,  )

Solutions

Expert Solution

The 95% Confidence Interval for slope is between 4.0709 and 5.7678.

Distance Damage
3.4 26.2
1.8 17.8
4.6 31.3
2.3 23.1
3.1 27.5
5.5 36
0.7 14.1
3 22.3
2.6 19.6
4.3 31.3
2.1 24
1.1 17.3
6.1 43.2
4.8 36.4
3.8 26.1
0.923
r   0.961
Std. Error   2.316
n   15
k   1
Dep. Var. Damage
ANOVA table
Source SS   df   MS F p-value
Regression 841.7664 1   841.7664 156.89 1.25E-08
Residual 69.7510 13   5.3655
Total 911.5173 14  
Regression output confidence interval
variables coefficients std. error    t (df=13) p-value 95% lower 95% upper
Intercept 10.2779
Distance 4.9193 0.3927 12.525 1.25E-08 4.0709 5.7678

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