3 years ago

For two independent events A and B, Pr(A or B) = 0.8 and Pr(B) = 0.3. From this, find Pr(A).

1 answer:

7 0

Answer:

please give me brainlist and follow

Step-by-step explanation:

Correct option is

5/7

As A and B are independent

0.8=P(A∪B)=P(A)+P(B)−P(A)P(B)

=0.3+P(B)−(0.3)P(B)

⇒0.5=(0.7)P(B)⇒7P(B)=5

You might be interested in

LenaWriter [7]

1) mean: 7. median: 6. mode: 10
2) mean: 83.8. median: 84. mode: none
3) mean: 20.7. median: 20. mode: 26 & 20

8 0

2 years ago

Mashcka [7]

The answer would be 3 blocks per minute

8 0

3 years ago

shtirl [24]

A. sandwiches per hours is 4.5/hour
b. hours per sandwich is 0.33/sandwich

7 0

3 years ago

Pani-rosa [81]

Just add all the numbers together and then multiple it by 3

5 0

3 years ago

8_murik_8 [283]

Answer:

a 40, aka a failing grade ( do ur test :) )

Step-by-step explanation:

6 0

2 years ago