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pshichka [43]
2 years ago
7

The number of pages that Armando, Billy, Robert, and Joel can read in a day is shown below.

Mathematics
2 answers:
IceJOKER [234]2 years ago
5 0
Joel read the most out of the group.
natka813 [3]2 years ago
3 0

Answer with explanation:

It is given that,

⇒  Armando read 15% of his 46-page book.

Number of pages read by Armando in a day

                    =\frac{15}{100} \times 46\\\\=\frac{690}{100}\\\\=6.9  

⇒  Billy read 11% of his 72-page book.

   Number of pages read by Billy in a day

                    =\frac{11}{100} \times 72\\\\=\frac{792}{100}\\\\=7.92  

⇒   Robert read 12% of his 68-page book.  

         Number of pages read by Robert in a day

                    =\frac{12}{100} \times 68\\\\=\frac{816}{100}\\\\=8.16  

⇒     Joel read 14% of his 69-page book.

        Number of pages read by Joel in a day

                    =\frac{14}{100} \times 69\\\\=\frac{966}{100}\\\\=9.66

⇒ Joel  read the greatest number of pages in a day.

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rjkz [21]

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Step-by-step explanation:

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It can be used to compare variability of two population or two samples.

Formula:

\text{Coefficient of Variation} = \displaystyle\frac{\text{Standard Deviation}}{\text{Mean}}

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}

where x_i are data points, \bar{x} is the mean and n is the number of observations.

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

x: 14, 0, 39, 25, 32, 27, 28, 14, 14, 15

Mean = \frac{208}{10} = 20.8

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Since coefficient of variation of x is less compared to y, thus it could be said bonds does not reduce overall risk of an investment portfolio.

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2 years ago
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