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Chapter 13: Q.14 (page 764)
What is the Mean Square Error?
The Mean square Error is .
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Are the means for the final exams the same for all statistics class delivery types? Table 13.25 shows the scores on final exams from several randomly selected classes that used the different delivery types
Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data were collected independently and randomly. Use a level of significance of .
There are five basic assumptions that must be fulfilled in order to perform a one-way ANOVA test. What are they?
Write a fourth assumption.
Four sports teams took a random sample of players regarding their GPAs for the last year. The results are shown in Table 13.8
| Basketball | Baseball | Hockey | Lacrosse |
| 3.6 | 2.1 | 4.0 | 2.0 |
| 2.9 | 2.6 | 2.0 | 3.6 |
| 2.5 | 3.9 | 2.6 | 3.9 |
| 3.3 | 3.1 | 3.2 | 2.7 |
| 3.8 | 3.4 | 3.2 | 2.5 |
Use a significance level of , and determine if there is a difference in GPA among the teams .
Two students are interested in whether or not there is variation in their test scores for math class. There are total math tests they have taken so far. The first student鈥檚 grades have a standard deviation of .The
second students' grades have a standard deviation of . The second student thinks his scores are more consistent.
What is the F Statistic?
A video game developer is testing a new game on three different groups. Each group represents a different target market for the game. The developer collects scores from a random sample from each group. The results are shown in the Table.
What are the and ?
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