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# gcse maths watch

1. Eggs are delivered to a supermarket in boxes of 6. For each egg, the probability that it is cracked is 0.05 independently of other eggs. Find the probability that
(i) in one box there are no cracked eggs,
(ii) in one box there is exactly 1 cracked egg.

The manager checks the eggs as follows.
• He takes a box at random from the delivery.
• He accepts the whole delivery if this box contains no cracked eggs.
• He rejects the whole delivery if the box contains 2 or more cracked eggs.
• If the box contains 1 cracked egg then he chooses another box at random.
• He accepts the delivery only if this second box contains no cracked eggs.

(iii) Find the probability that the delivery is rejected.

Zacken as you requested

ps. ignore the first two... solve the last one only please! with thorough explanation!!
2. Moved to maths.
3. I got 0.01228630789 which must be wrong
I'll just leave
4. (Original post by surina16)
I got 0.01228630789 which must be wrong
I'll just leave
byeeeeeeeee
5. (Original post by Zacken)
Moved to maths.
cool but aren't you gonna help?
6. (Original post by manuel132)
byeeeeeeeee
this isn't AQA is it?
7. (Original post by surina16)
this isn't AQA is it?
exam board doesn't matter haha.. however, it's not.. are you doing gcses?
8. (Original post by manuel132)
exam board doesn't matter haha.. however, it's not
Haha its just that I've never had to do this sort with AQA
9. Do you have the answers?
Because this time I got 0.2771934173
10. (Original post by surina16)
Because this time I got 0.2771934173
0.0943...i don't think this is a gcse question so don't worry
11. 0.05 x 6 = 0.3
1 - 0.3 = 0.7 for i) its completely wrong I know :P

1 cracked egg = 1 x 0.5 = 0.5 /100 = 0.005?

There should be much algorithm behind this regarding its "GCSE" therefore I wouldnt advance into too much theory in the working out. Is this an S1 Q or an GCSE?
12. 2 X 0.5 = 1.0
0.9 = Accepted 0.1 = not accepted
Therefore 0.1/0./9 = 0.11111111111 %
0.11111111111 x 2 = 0.222222 %

Wrong, I know. Despite being a further maths student, why does this Q bewilder me
13. (Original post by Oblivion99)
0.05 x 6 = 0.3
1 - 0.3 = 0.7 for i) its completely wrong I know :P

1 cracked egg = 1 x 0.5 = 0.5 /100 = 0.005?

There should be much algorithm behind this regarding its "GCSE" therefore I wouldnt advance into too much theory in the working out. Is this an S1 Q or an GCSE?
it's further maths gcse
14. (Original post by Oblivion99)
2 X 0.5 = 1.0
0.9 = Accepted 0.1 = not accepted
Therefore 0.1/0./9 = 0.11111111111 %
0.11111111111 x 2 = 0.222222 %

Wrong, I know. Despite being a further maths student, why does this Q bewilder me
further maths gcse or a level?
15. (Original post by manuel132)
it's further maths gcse
OCR additional maths? Say waaaahrt, were doing logarithms and f(x)graphs, never done such a Q isnt this s1 probability?
16. (Original post by manuel132)
further maths gcse or a level?
GCSE. Do you know the solution? I think ive worked it out on paper..
17. (Original post by Oblivion99)
OCR additional maths? Say waaaahrt, were doing logarithms and f(x)graphs, never done such a Q isnt this s1 probability?
yea, ocr.. but have no clue if it's s1 probablity
18. (Original post by Oblivion99)
GCSE. Do you know the solution? I think ive worked it out on paper..
19. (Original post by manuel132)
On paper. I got 0.967? Howd you do it?
20. (Original post by Oblivion99)
On paper. I got 0.967? Howd you do it?
wish i could explain but it's called binomial distribution.. look it up on examsolutions and you may find how to tackle such questions

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