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

the newspaper reported that 134.8 million viewers watched the Super Bowl. Write the number of viewers in standard form
why is the understanding of classification an important life skill
a baseball team has home games on Thursday and Saturday. the two teams together earn $4746.50 for the team. Thursdays game generates $53.50 less than Saturday's
what number is 24% of 80
I need help factoring!
Estimate the sum or difference? 6/10 + 7/12 Not sure how to do?
how were different United States regions linked economically?
The leg's force forward on the foot= 500N The foot's force forward on the ball= 500N The ball's force back on the foot= 500N What is the net force on the ball?
3 classmates share 2 granola bars equally. How much does each classmate get?
Can someone plz tell me the question to this instead of saying something else than my questioned plz help me and don't mind about the writing in the pic it not