Recent content by lorik

Ok let me make it clear coz you seem to have made my question a rocket science . The question again; the report(or ratio) of clay and limestone is 1 : 3 ,find the percentage of clay and limestone ? ok ?

Homework Statement I desperately need to know something which I consider basic but yet I get different answers all the time for example ratio A:G=1:3 or A:G=1:2 or A:G=1:4 some students are telling me that the ratios should be divided with one another like 1/3=0.33 to get the...

Well I think I got it the idea just came out of nowhere ph1,ph2,ph3 have their number 2/5 ,2/5 ,1/5 because when looking at the exercise it clearly says 2 boxes ,2 boxes and then finally says 1 box ,while ph1(A) have their numbers acquired from black balls ,at least that's how i understand it...

I have and so far its impossible to understand this particular problem ,book i have sucks

p(h1) is for whites and ph1(A) is for blacks ?

@vela then why do you think p(h2) is 2/5 ? Isn't there 1 white in the second box ? Same goes for H3 as its written 4 whites and p(h3) is showing 1/5 :confused:

Homework Statement bayes theorem we got 5 boxes with white and black balls ,2 boxes have 2 white balls and 3 black(H1), 2 boxes have 1 white and 4 black(H2) , 1 box has 4 whites and 1black(H3) .From a random extraction the ball turned out to be black find probability that the extracted ball...

Homework Statement Tomorrow I am having probability exam ,but the main issue remains. I need tips in solving problems. Example ,when would the question be related to permutation or independent events or else .I know how to solve it which is pretty easy in probability but I need more tips...

Homework Statement From 52 cards we draw one .Whats the probability that the drawn card is divisible by 4 Now : in my notebook its 12/52=3/13 .But shouldn't it be 13/52 ? BECAUSE clearly if we multiply 13 *4=52 Same problem : Whats the probability that of 52 cards I draw one that is...

Sorry , the way it should be done is : ph1(A)=3/5, ph2(A)=4/5 ,ph3(A)=1/5 p(h1)=2/5 2 white balls ,ph1(A)= 3/5, 3 white balls all boxes equal 5 so...

I think it must 'the happening or event' I don't know I hate learning literature related to math.

my tongue language I think pronounces p instead of b .I have the book right here let me check...wait a sec the book actually writes 'b' as well .Anywayz

Homework Statement bayes theorem we got 5 boxes with white and black balls ,2 boxes have 2 white balls and 3 black, 2 boxes have 1 white and 4 black , 1 box has 4 whites and 1black .From a random extraction the ball turned out to be black find propability that the extracted ball was from the...

It should be about 50% chance of one consisting non defective and the other being defective I THINK in practice assume we have 50 balls 25 good and 25 bad ,we draw 2 balls and it should be G1/2 * B1/2 ?

permutation C25(1) * C28(1)/ C53(2) = 700/(2756/2) =1400/2756 But still need explenation though.