anonymous
  • anonymous
Is it A? Determine the sum of the given probabilities. Are the events complementary? P(gold) = 4/11; P(silver) = 7/11 A. 1 The events are complementary. B. 1 The events are not complementary. C. 1/2 The events are complementary. D. 1/2 The events are not complementary.
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
AravindG
  • AravindG
Do you know when probabilities become complementary?

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anonymous
  • anonymous
Complementary events are like 1/2 or like flipping a coin and getting heads or tails, rite?
amistre64
  • amistre64
almost, two sets are complementary when they add up to the entire sample space of events say the universal set is: U={a,b,c,d,e} let setA = {a,b,c} the complement of A is the set U-A = {d,e} A combined with its complement form the Universal set.
amistre64
  • amistre64
In probability, the universal set of the sample space, is 1 so the probability of the complements added up will have to equal what?
anonymous
  • anonymous
I dunno. I'm sorry, but I don't get most of what you're trying to say.
amistre64
  • amistre64
what is the probability of an entire sample space?
anonymous
  • anonymous
That would be...1, rite?
amistre64
  • amistre64
yes and complements are events that are mutually exclusive (what does this mean?) that add up to the entire sample space.
anonymous
  • anonymous
Oh okie
amistre64
  • amistre64
and yes, its A ... 4/11 + 7/11 = 1, and gold cannot be silver so they are mutually exclusive.
anonymous
  • anonymous
Thnx for helping me :)

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