Mathematics (AS & A Level) · May / June 2020 · Paper 62 · Question 3
9709
As printed in the paper
The question as text
In the data-entry department of a certain firm, it is known that 0.12% of data items are entered incorrectly, and that these errors occur randomly and independently.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
3(a)(i)[1]
3(a)(ii)[3]
3(a)(iii)[2]
3(b)[3]
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