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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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pmiller1129 pmiller1129
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A year ago
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 a 98% confidence interval for the mean annual repair cost of all used vehicles with 22,500 miles.=> (Given: Sxx= 8,036,677,024 and\(\style{font-family:Times New Roman;}{\overline x}\)= $43,627.700.)



▸

$(120.00, 759.20)



▸

$(–431.51, 1,310.72)



▸

$(22,199.25, 22,800.75)



▸

$(128.29, 750.91)

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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NapoukahNapoukah
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A year ago
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pmiller1129 Author
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