Qualification > Math

Probability

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Dasith:
technically speaking this sum is meaningless!

it says it rains as many days as there are rain free days:

so lets take rainy days as 30
             dry days ;)as 10

Its obvious that the whether forcasting thing would predit;it would rain
30 days out of the total 40 days.(not less than dat)

but it says out of there is 1/10 chance that they are wrong :O
so out of the 30 days:
 30 x 1/10 of days could be wrong(i.e it wouldn't rain if they say it would)
 so 3 days are gone dry
since it rains 30 days anyway 3 days should rain !!

out of the 10 dry days:
 10x9/10 is dry so 9 days are dry :
 10 x 1/10 of days could be wrong(i.e it would rain if they say it wouldn't)
 only one day could rain here ! i.e for prediction to be wrong
but theres 3 left!!

 

just correct me if i hav understood the sum wrong ,or if i'm wrong
in my calculations :D because i havent done math

EMO123:
ya fidato is correct i also did like that

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