3 years ago

Event A occurs with probability 0.2. Event B occurs with probability 0.8. If A and B are disjoint (mutually exclusive), then

Mathematics

2 answers:

larisa86 [58]3 years ago

6 0

Answer:

Step-by-step explanation:

If A and B are disjoint events, then P(A∩B) = 0 (because A and B haven't common parts), intersection ∩ can be also denoted with "and", so P(A and B) =0.

On the other hand, if A and B are disjoint events, then P(AUB) = P(A)+P(B). Union U can be also denoted with "or", then P(A or B) = P(A)+P(B).

P(A or B)= 0.2+0.8 = 1.

So, the answer is B.

swat323 years ago

4 0

What's the question? Do you want to prove these statements?

You might be interested in

Translate this sentence into a equation. 117 is the product of Delia's age and 9.

Tju [1.3M]

Let Delta's age be d

$d=\frac{117}{9}$

8 0

3 years ago

Classify this triangle by its sides?

mel-nik [20]

Answer:

Isosceles

Step-by-step explanation:

Hope this helps you

4 0

3 years ago

Read 2 more answers

MiKiyah invested $2,500 in a simple interest account for 2 years. At the end of the 2 years, she has earned $75 in interested. W

forsale [732]

Answer:

if $178 $178 interest was earned in 2 2 years at an interest rate of 4%

Step-by-step explanation:

XD i tried

3 0

2 years ago

lina went to the playground. she played on the swings for 45 minutes and went on the slide 15 minutes. it was 1:15 p.m. when lin

Aleksandr [31]

The answer to this problem is 12:15

8 0

3 years ago

Read 2 more answers

above swimming pool is leaking after 1/2 hour the pool has lead 7/8 of a gallon of water how many gallons of water per hour is a

jekas [21]

Do a proportion. X/7/8=1/1/2. 7/8 x 1= 7/8. Now do 7/8 divided by 1/2. To do this multiply 7/8 by the reciprocal of 1/2 which is 2/1. 7 x 2= 14 and 8 x 1=8. Improper fraction is 14/8. It is 1 6/8 as a mixed number which is simplified to 1 3/4. Answer is 1 3/4

7 0

3 years ago