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TEA [102]
3 years ago
14

Listed below are amounts​ (in millions of​ dollars) collected from parking meters by a security service company and other compan

ies during similar time periods. Do the limited data listed here show evidence of stealing by the security service​ company's employees? Security Service Company:Security Service Company: 1.41.4 1.81.8 1.61.6 1.71.7 1.51.5 1.51.5 1.71.7 1.61.6 1.51.5 1.61.6 Other Companies:Other Companies: 1.81.8 1.91.9 1.61.6 1.71.7 1.61.6 1.81.8 1.71.7 1.51.5 1.81.8 1.71.7 Find the coefficient of variation for each of the two​ samples, then compare the variation.
Mathematics
1 answer:
dezoksy [38]3 years ago
6 0
Given: Security Service Company:
1.4 1.8 1.6 1.7 1.5 1.5 1.7 1.6 1.5 1.6
Mean: 1.59
Standard Deviation: 0.014333

Other companies: 1.8 1.9 1.6 1.7 1.6 1.8 1.7 1.5 1.8 1.7
Mean: 1.71
Standard deviation: 0.014333

The coefficient of variation for security Service Company:

CV = (Standard Deviation/Mean) * 100.

= (0.14333/1.59) * 100

= 9.01%

The coefficient of variation for other companies:

CV = (Standard Deviation/Mean) * 100.

= (0.014333 / 1.71) * 100

= 8.38%

the limited data listed here show evidence of stealing by the security service company's employees because there is a significant difference in the variation.
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Serenity has 2\frac{1}{2} 2 1 ​ cups of dough to make dumplings. If she uses \frac{3}{4} 4 3 ​ cup of dough for each dumpling, h
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3 dumplings can be made by Serenity

<em><u>Solution:</u></em>

Given that,

Serenity has 2\frac{1}{2} cups of dough to make dumplings

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To find: Number of whole dumplings made

From given information,

\text{Total cups of dough } = 2\frac{1}{2} = \frac{2 \times 2+1}{2} =\frac{5}{2}

\text{Cups of dough for 1 dumpling } = \frac{3}{4}

To find the number of whole dumplings made, we can divide the total cups of dough by cups of dough for 1 dumpling

\text{Number of whole dumplings made } = \frac{\text{total cups of dough}}{\text{cups of dough for 1 dumpling}}\\\\\text{Number of whole dumplings made } = \frac{\frac{5}{2}}{\frac{3}{4}} = \frac{5}{2} \times \frac{4}{3}\\\\\text{Number of whole dumplings made } = \frac{10}{3} = 3.33 \approx 3

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6 0
3 years ago
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y = 6/4x - 9/4

simplify

y = 3/2 x - 9/4

3 0
2 years ago
Read 2 more answers
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