Nashae5116 Nashae5116
  • 02-01-2020
  • Mathematics
contestada

Given that events A and B are independent and that P(A) = 0.8 and P(B|A) = 0.4, then P(A and B) = 0.32.

a. True
b. False

Respuesta :

windyyork windyyork
  • 03-01-2020

Answer: Option 'a' is correct.

Step-by-step explanation:

Since we have given that

P(A) = 0.8

P(B|A) = 0.4

Since A and B are independent events.

Since P(B|A) is given, we will use the formula for "conditional probability":

So, [tex]P(B|A)=\dfrac{P(A\cap B)}{P(A)}\\\\0.4=\dfrac{P(A\cap B)}{0.8}\\\\0.4\times 0.8=P(A\cap B)}\\\\0.32=P(A\cap B)[/tex]

Hence, it is true.

Therefore, Option 'a' is correct.

Answer Link

Otras preguntas

how is mass transit in cities a possible solution tk urban air pollution?
How were life forms affected by the rise in atmospheric oxygen levels that began 2.2 billion years ago?
How is it possible for Mercury to have frozen ice ?
Which equation has the same y-intercept as y=4x-3?a. y-3=x              b. y=8x+3    c. 3-y=4x      d. y=-3+8xWhich of the following is the equation of the line
what is the answer for (20,8),(9,16) ?
Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.
Scarcity is the condition of not having enough goods and services to satisfy everyone's?
Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.
Historians of china have traditionally dated the beginning of Chinese civilization to the founding of the what??
Scarcity is the condition of not having enough goods and services to satisfy everyone's?