Matched or Paired Samples
Use the following information to answer the next five exercises. A study was conducted to test the effectiveness of a software patch in reducing system failures over a six-month period. Results for randomly selected installations are shown in Table
10.21. The “before” value is matched to an “after” value, and the differences are calculated. The differences have a
Installation | A | B | C | D | E | F | G | H |
Before | 3 | 6 | 4 | 2 | 5 | 8 | 2 | 6 |
After | 1 | 5 | 2 | 0 | 1 | 0 | 2 | 2 |
Table 10.21
State the null and alternative hypotheses.
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- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill