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\(\style{font-family:Times New Roman;}{\overline x}\)= $43,627.700.)
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$(120.00, 759.20)
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$(–431.51, 1,310.72)
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$(22,199.25, 22,800.75)
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$(128.29, 750.91)
Annual Rings
Selected Nonsteroidal Anti-Inflammatory Drugs
Selected Antiemetics
Most vehicles will be correctly positioned when the left front tire is centered on the tire pad.
In plant fossils, leaf margin is used to estimate mean annual temperature