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 do you unsimplify a radical
The children had no shoes and carried tattered school books. True or false?
Is -13/3 located between 0 and -1 on a number line
What is 22.43 - 37.80??
what's the measure of angle 1? what's the measure of angle 2? what's the value of x? what's the value of y?
Which of the following statements is true of population and population density in East Asia? A. Around 70 percent of Japan's population lives in the region betw
In The early months of some year one site added .4 million new accounts every day at this rate how many days would be needed to add 32 million new accounts?
A direct democracy is a form of government in which citizens
Who were the robber baron?
List at least three of your financial goals. explain whether they are short-term, intermediate, or long-term. (1-3 sentences. 3.0 points)