Quiz6 - Quiz (WK6) 1. Analysis of variance is used to...

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Quiz (WK6) 1. Analysis of variance is used to (Points : 1) compare nominal data. compute t test. compare population proportion. Simultaneously compare several population means. 2. Suppose a package delivery company purchased 14 trucks at the same time. Five trucks were purchased from manufacturer A, four from B and five from manufacturer C. The cost of maintaining each truck was recorded. The company used ANOVA to test if the mean maintenance cost of the trucks from each manufacturer were equal. To apply the F test, how many degrees of freedom are in the denominator? (Points : 1) 2 3 11 14 3. A manufacturer of automobile transmissions uses three different processes. The management ordered a study of the production costs to see if there is a difference among the three processes. A summary of the findings is shown below. What is the mean square for error? (Points : 1) 2.511 2.151 33.9 29.035 4. A manufacturer of automobile transmissions uses three different processes. The management ordered a study of the production costs to see if there is a difference among the three processes. A summary of the findings is shown below. Process 1 Process 2 Process 3 Total Process Totals ($ 100's) 137 108 107 352 Sample Size 10 10 10 30 Sum of Squares 1893 1188 1175 4256
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What is the sum of squares of the error? (Points : 1) 67.80 58.07 149.34 23.47 5. A manufacturer of automobile transmissions uses three different processes. The management ordered a study of the production costs to see if there is a difference among the three processes. A summary of the findings is shown below.
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This note was uploaded on 08/29/2011 for the course EC 315DLB taught by Professor Randallbarcus during the Fall '10 term at Park.

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Quiz6 - Quiz (WK6) 1. Analysis of variance is used to...

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