broken eggs question

[Redmoon]

Question A supermarket orders eggs in boxes of six. The probability of a box holding at least one broken egg is 0·018. In a delivery of 300 boxes of eggs, 7 boxes had at least one broken egg. Is this more or less than expected? Use your working to explain your answer.



Would this be as simple as 7 divided into 300? so the answer would be 0.023 which would be more than expected?

Thanks for any help.

 

[Harry_the_cat]

Yeah that's one way.
I'd calculate the number of boxes expected to contain at least one broken egg to be 0.018 x 300 =5.4 boxes. So you expect 5.4 boxes and get 7 boxes, so more than expected.
Just a different way of coming to the same conclusion.