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thanku!! got it.... ugh i just dont know how im suposed to conc on every single word in the paper.....:/Question 7 (iii)
70 days at random, how many would have temperature more than 3 times the mean.
So first we calculate the probability, that a single day has, that its minimum temperature is more than 3 times the mean.
So, p(X > 3u )
p(Z > (3u - u)/2u )
p(Z > 2u/2u)
p( Z > 1 )
1 - P(Z<1)
after looking from the table:
1 - 0.8413
0.1587
So the probability of a single day having a minimum temperature more than 3 times the mean:
p = 0.1587
n, number of days = 70.
Expected value, = np, = 70(0.1587) = 11.109,
Therefore 11 days.
Im not getting this method but i managed to do it with the other method mentioned in the mark scheme!its w11 qp 62
Can't we do it like: No.of arrangements - No G together - All G togetherIm not getting this method but i managed to do it with the other method mentioned in the mark scheme!
That 6! * (7! / 3!)
I dont think so!Can't we do it like: No.of arrangements - No G together - All G together
[9!/(3!*3!)] - [(7C3*6!)/3!] - 7!/3!
Why?I dont think so!
its w11 qp 62
I got it hassam:Can't we do it like: No.of arrangements - No G together - All G together
[9!/(3!*3!)] - [(7C3*6!)/3!] - 7!/3!
The answer is coming negative!Why?
i get 5040The answer is coming negative!
* If i did the calculation right!
Well then my calculation must have been wrong but i cant seem to get the calculations right!i get 5040
its very easy bro just think of it like thiswell this is so damn cnfusing
i had the same question!! this one's bugging me since yesterdayum in this question, im finding the z value for 0.94, but the answer's wrong, somehow they are giving the z value for 0.97..... can sm1 pls explain whats going on here?View attachment 10654View attachment 10655
i had the same question!! this one's bugging me since yesterday
The probability of a letter being >12g above the mean is 0.94+(0.06/2)=0.94+0.03=0.97um in this question, im finding the z value for 0.94, but the answer's wrong, somehow they are giving the z value for 0.97..... can sm1 pls explain whats going on here?View attachment 10654View attachment 10655
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