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

What are the 3 features of a typical seigneurie
How do scientists use seismic waves to determine the interior structure of Earth?
Dominick lives 1 3/4 miles from his school.  If his mother drives him half the way, how far will Dominick have to walk to get to school?
After what happened on April 19 can war between the colonies and Great Britain be avoided?
Explain how a species can evolve through natural selection.
What is biogeography and what does it provide?
you measure or observe two events to occur at the same time one nearby and one further away. Which one did you actually see first?
By the mid-1700s, the largest city in the colonies was (A) New York (B) Boston (C) Philadelphia (D) Charleston (E) Wilmington, Delaware
which factor made the most difference in how agriculture affected the economies of the colonies?
“The genetic code is universal.” Explain this statement.