Question

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.

Answer 1

@Preetha

Answer 2

@AravindG

Answer 3

Do you know when probabilities become complementary?

Answer 4

Complementary events are like 1/2 or like flipping a coin and getting heads or tails, rite?

Answer 5

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.

Answer 6

In probability, the universal set of the sample space, is 1

so the probability of the complements added up will have to equal what?

Answer 7

I dunno.
I'm sorry, but I don't get most of what you're trying to say.

Answer 8

what is the probability of an entire sample space?

Answer 9

That would be...1, rite?

Answer 10

yes

and complements are events that are mutually exclusive (what does this mean?) that add up to the entire sample space.

Answer 11

Oh okie

Answer 12

and yes, its A ... 4/11 + 7/11 = 1, and gold cannot be silver so they are mutually exclusive.

Answer 13

Thnx for helping me :)