Question

Stats help
Q.If the probabilities are 0.20,0.15 and 0.03 that a student will get a failing grade in chemistry and english or in both,what is the probability that the student will get a failing grade in atleast one of these subjects.

Answer 1

@xlegendx

Answer 2

3 probabilities?

Answer 3

Yeah?

Answer 4

is it 0.20 - chem; 0.15 - eng; 0.03 - both?

Answer 5

I guess.

Answer 6

i smell the stench of contingency table...

Answer 7

are you familiar with that?

Answer 8

Nope,like i said i'm just 12.

Answer 9

this would be tough....maybe i can show it to you and you might get it?

Answer 10

Is there any other way to do this? :p @hartnn you know? :3 he always explains me stats.

Answer 11

i suppose it is better for a user with 99 SmartScore to explain it eh @hartnn ?

Answer 12

*yawns* brb

Answer 13

ok...
Failing in both means failing in chemistry AND English
its probability = 0.03 given
Failing in atleast one subject = failing in chemistry OR English
its probability is to be found.

Answer 14

got that much ?

Answer 15

Failing in at least one subject = (failing in chem) OR (failing in English) OR (failing in both)

Answer 16

It is also the same as 1- (NOT failing in both)

Answer 17

^she's good

Answer 18

haha! how did i miss that :P

Answer 19

lol. 99s tend to think in an overcomplicated fashion

Answer 20

Who is the correct one? :3

Answer 21

well...callisto was the only one who said anything....hart just stated the given....

Answer 22

@Callisto explain me plz

Answer 23

although i think hartnn was about to go into set theories

Answer 24

Do you understand this venn diagram?