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Author Question: Tenused cars from a rental fleet are randomly selected. Each vehicles annual maintenance cost from ... (Read 54 times)

amymoore

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on: Feb 26, 2023
Ten used cars from a rental fleet are randomly selected. Each vehicle’s annual maintenance cost from the previous calendar year (y) is recorded as well as the vehicle’s current mileage (x). A simple linear regression is conducted on the data.

​

The regression equation is

Maint = 297 + 0.00636 Miles

​

Predictor    Coef SE       Coef       T       P

Constant       296.6      162.4    1.83   0.105

Miles       0.006357   0.003121    2.04   0.076

​

S = 279.775 R-Sq = 34.1% R-Sq(adj) = 25.9%

​

Analysis of Variance

​

Source            DF       SS      MS      F       P

Regression         1   324727  324727   4.15   0.076

Residual Error     8   626192   78274

Total              9   950919

 

What is an 80% prediction interval for the annual repair cost of a used vehicle with 40,000 miles? (Given: Sxx= 8,036,677,024 and\(\style{font-family:Times New Roman;}{\overline x}\)= $43,627.700.)


◦

$(144.72, 956.96)


◦

$(140.67, 961.01)


◦

$(426.25, 675.43)


◦

$(427.48, 674.20)

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Marked as best answer by amymoore on Feb 26, 2023

bigboya

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Reply #1 on: Feb 26, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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amymoore

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Reply 2 on: Feb 26, 2023
Great answer, keep it coming :)

momolu

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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