gcse maths

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 :biggrin:

ps. ignore the first two... solve the last one only please! with thorough explanation!!

(edited 8 years ago)

Moved to maths.

I got 0.01228630789 which must be wrong :biggrin:

I'll just leave :creep:

Reply 3

manuel132

OP

2

Original post by surina16

I got 0.01228630789 which must be wrong :biggrin:

I'll just leave :creep:

byeeeeeeeee :biggrin:

Reply 4

manuel132

OP

2

Original post by Zacken

Moved to maths.

cool but aren't you gonna help?

Reply 5

TheConfusedMedic

21

Original post by manuel132

byeeeeeeeee :biggrin:

this isn't AQA is it? :dontknow:

Reply 6

manuel132

OP

2

Original post by surina16

this isn't AQA is it? :dontknow:

exam board doesn't matter haha.. however, it's not.. are you doing gcses?

(edited 8 years ago)

Reply 7

TheConfusedMedic

21

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 :biggrin:

Reply 8

TheConfusedMedic

21

Do you have the answers?
Because this time I got 0.2771934173
:redface:

Reply 9

manuel132

OP

2

Original post by surina16

Do you have the answers?
Because this time I got 0.2771934173
:redface:

0.0943...i don't think this is a gcse question so don't worry

Reply 10

Oblivion99

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?

Reply 11

Oblivion99

11

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 :frown:

Reply 12

manuel132

OP

2

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

Reply 13

manuel132

OP

2

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 :frown:

further maths gcse or a level?