Determine the sum of the given probabilities. Are the events complementary?

@kayders1997

P(red) = 2/5 ; P(blue) = 3/5

A.
1/2 The events are complementary.

B.
1/2 The events are not complementary.

C.
1 The events are complementary.

D.
1 The events are not complementary.

Question

Determine the sum of the given probabilities. Are the events complementary?

@kayders1997

P(red) = 2/5  ; P(blue) =  3/5
 
 A.
  1/2 The events are complementary.
 
 B.
  1/2 The events are not complementary.
 
 C.
1 The events are complementary.
 
 D.
1 The events are not complementary.

kayders1997 · Answer

First what is the sum when you add these together?

x__hazel__x · Answer

Umm.. $$\frac{ 2 }{ 5 } + \frac{ 3 }{ 5 } = \frac{ 5 }{ 5 } $$

x__hazel__x · Answer

Which is 1 :3

x__hazel__x · Answer

So im guessing A and B are crossed out!

kayders1997 · Answer

Yes, now you need to think about is it complimentary which is like saying do you have only two outcomes, like when flippling a coin you can only gets heads or tails is that kinda the case here?

x__hazel__x · Answer

No, because you will get a better chance of pulling out blue!

x__hazel__x · Answer

D Right?

kayders1997 · Answer

Yeah, I'm pretty sure thats right, at first I thought it was yes because there were only 2 colors but there is more of one than the other

x__hazel__x · Answer

Okay! Thank you!

kayders1997 · Answer

No problem :)

kayders1997 · Answer

Any others? :)