Mathematics (AS & A Level) · May / June 2017 · Paper 72 · Question 2
9709
As printed in the paper
The question as text
Javier writes an article containing 52 460 words. He plans to upload the article to his website, but he knows that this process sometimes introduces errors. He assumes that for each word in the uploaded version of his article, the probability that it contains an error is 0.000 08. The number of words containing an error is denoted by X.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
2(i)[2]
2(ii)[1]
2(iii)[2]
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