Sixty adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below. Flossing Frequency for Adults with Gum Disease # Flossing per Week Frequency Relative Frequency Cumulative Relative Freq. 21 0.3500 1 15 0.9333 6 3 0.0500 1 0.0167 O Part (a) Fill in the blanks in the table. (Round your answers for relative frequency and cumulative relative frequency to four decimal places.) Flossing Frequency for Adults with Gum Disease # Flossing per Week Frequency Relative Frequency Cumulative Relative Freq. 21 0.3500 1 15 3 0.9333 6 3 0.0500 1 0.0167 O Part (b) What percent of adults flossed six times per week? (Round your answer to two decimal places.) % O Part (c) What percent flossed at most three times per week? (Round your answer to two decimal places.)

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.