What is the number of books sold in the highest of sales

Reference no: EM13192034

The annual sales of romance novels follows a normal distribution, however the mean and std deviation are not known. 40% of the time the sales exceed 470,000 books and 10% of the time sales exceed 500,000 books. What is the number of books sold in the highest 5% of sales?

Reference no: EM13192034

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What is the number of books sold in the highest of sales : The annual sales of romance novels follows a normal distribution, however the mean and std deviation are not known. 40% of the time the sales exceed 470,000 books and 10% of the time sales exceed 500,000 books. What is the number of books sold in ..

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