Three different brands of tires were compared for wear characteristics. From each brand of tire, ten tires were randomly selected and subjected to standard wear-testing procedures. The average mileage and the sample variances (both in 1000 miles) obtained for each brand of tire are shown below.
Brand A
Brand B
Brand C
Average Mileage37
38
33
Sample Variance3
4
2
?
At the .05 level of significance, test to see if there is a significant difference in the average mileage of the three brands.
What will be an ideal response?
?
| SSTR = 140 | MSTR = 70 |
| SSE = 81 | MSE = 3 |
| F = 23.3; p-value is less than .01; reject H0 | |
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Fill in the blank(s) with correct word
List at least four major causes of stress.
What will be an ideal response?
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What will be an ideal response?
A commercial unit may be a group of items, such as a dozen pairs of socks
Indicate whether the statement is true or false