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SpyIntel [72]
3 years ago
14

I don't understand e. Please help

Mathematics
1 answer:
dexar [7]3 years ago
6 0
Case 1: Probabilities cannot add up to a number greater (or less) than 1. This would mean there is greater than a 100% chance of something happening which just doesn't make sense. 0.4 + 0.4 + 0.3 = 1,1

Case 2: You cannot have a negative probability. That is claiming that there is a -10% chance of an event happening, there is at the very least a 0%. Despite them "adding" up to 1, the negative probability makes no sense.

Hope I helped!
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Aloha, thanks for using Brainly.

Step-by-step explanation:

For 1. 7/8 is 90 percent so .90

For 2+. Add the bottom together, whatever you get divide top by bottom.

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