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pls include working solutions The average number of typographical errors found in a book is 4 per 15 pages. Find the probability that there are

pls include working solutions
The average number of typographical errors found in a book is 4 per 15 pages. Find the probability that there are at least 3 typographical errors found per 15 pages. (4 marks) E There are 150 pages in the book. By using a suitable approximation, 4 estimate the probability that there are between 38 to 43 typographical errors in the book. (6 marks)

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