Question
Alex has read 5/6 of a book, while Tina has read only
3/5 of the book she is reading. Both have another 150 pages of their respective books remaining to be read. What fraction of the number of pages read by Alex has been read by Tina?Solution
Alex has read 5/6 of a book. Remaining = 1 - 5/6 = 1/6 Tina has read 3/5 of her book. Remaining = 1 - 3/5 = 2/5 For Alex: 1/6 = 150 pages, so total = 900 pages For Tina: 2/5 = 150 pages, so total = 375 pages Fraction of pages read by Alex that have been read by Tina: Pages read by Tina = 375 * 3/5 = 225 Pages read by Alex = 900 * 5/6 = 750 Fraction = 225 / 750 = 3/10
Approximately, the coefficient of variation for the given data where Pearson's second measure of skewness = 0.42, arithmetic mean- 86 and median 80, is:


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