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| revprev | Admin | May 9'23 at 17:21 | +30 | m | |
| revcur | Admin | (Created page with "'''Solution: B''' Let <math>X_1, \ldots, X_n </math> denote the life spans of the <math>n</math> light bulbs purchased. Since these random variables are independent and norma...") | May 9'23 at 17:20 | +1,030 |