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Samples of two types of electric light bulbs were tested for length of life and following data were obtained: Type 1 Type 2 Sample Size
- Samples of two types of electric light bulbs were tested for length of life and following data were obtained:
| Type 1 | Type 2 | |
| Sample Size | 11 | 10 |
| Sample means | 1284 hrs | 1056 hrs |
| Sample S. D's | 36 | 40 |
Is there difference in the means sufficient to warrant that type 1 is different to type 2 regarding length of life? Find the range and test at 95% interval estimation
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A First Course In Fuzzy Logic
Authors: Hung T Nguyen, Carol L Walker, Elbert A Walker
4th Edition
0429012608, 9780429012600
