Editing 2379: Probability Comparisons
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| You draw 3 random {{w|M&Ms}} and they're all red | | You draw 3 random {{w|M&Ms}} and they're all red | ||
− | | | + | | According to Randall's source, the proportion of reds is 13%.<ref>M&Ms color proportion<br/>13% red<br/>13% brown<br/>14% yellow<br/>16% green<br/>20% orange<br/>24% blue</ref> 0.13<sup>3</sup> ≈ 0.22%. |
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| 0.3% | | 0.3% | ||
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| 20% | | 20% | ||
| You get a dozen M&Ms and none of them are brown | | You get a dozen M&Ms and none of them are brown | ||
− | | Depending on the source of one's M&Ms in the U.S., the proportion of browns is either 0.124 or 0.125 . (1 - 0.125)^12 | + | | Depending on the source of one's M&Ms in the U.S., the proportion of browns is either 0.124 or 0.125 . (1 - 0.125)^12 = 20.1%; (1 - 0.124)^12 = 20.4% . |
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| 21% | | 21% | ||
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| 60% | | 60% | ||
| You get two M&Ms and neither is blue | | You get two M&Ms and neither is blue | ||
− | | | + | | The odds that an M&M is not blue is 77%, so the odds that 2 are not blue is (0.77)<sup>2</sup> = 59.29% . |
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| 65% | | 65% | ||
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| 76% | | 76% | ||
| You get two M&Ms and neither is red | | You get two M&Ms and neither is red | ||
− | | | + | | The odds that an M&M is nor red is 85%, so the odds that 2 are not red is 71.9% . |
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| 77% | | 77% | ||
| You get an an M&M and it's not blue | | You get an an M&M and it's not blue | ||
− | | | + | | The odds that an M&M is blue is 23%, so the odds that it's not blue is 77% . |
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| 78% | | 78% |