Listed below are amounts? (in millions of? dollars) collected from parking meters by a security service company and other companies 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: 1.31.3 1.71.7 1.61.6 1.41.4 1.51.5 1.51.5 1.71.7 1.61.6 1.41.4 1.51.5 other companies:other companies: 1.91.9 1.81.8 1.61.6 1.71.7 1.61.6 1.81.8 1.71.7 1.61.6 1.71.7 1.61.6 find the coefficient of variation for each of the two? samples, then compare the variation. the coefficient of variation for the amount collected by the security service company is nothing?%.

Question

German Rodriguez

Mathematics

17 October, 18:08

Listed below are amounts? (in millions of? dollars) collected from parking meters by a security service company and other companies 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: 1.31.3 1.71.7 1.61.6 1.41.4 1.51.5 1.51.5 1.71.7 1.61.6 1.41.4 1.51.5 other companies:other companies: 1.91.9 1.81.8 1.61.6 1.71.7 1.61.6 1.81.8 1.71.7 1.61.6 1.71.7 1.61.6 find the coefficient of variation for each of the two? samples, then compare the variation. the coefficient of variation for the amount collected by the security service company is nothing?%.

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Answers (1)

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Tito · Answer 1

Given:

Security Service Company:

1.3 1.7 1.6 1.4 1.5 1.5 1.7 1.6 1.4 1.5

Mean: 1.52

Standard Deviation: 0.131656

Other companies:

1.9 1.8 1.6 1.7 1.6 1.8 1.7 1.6 1.7 1.6

Mean: 1.7

Standard deviation: 0.105409

The coefficient of variation for security Service Company:

CV = (Standard Deviation/Mean) * 100.

= (0.131656/1.52) * 100

= 8.66%

The coefficient of variation for other companies:

CV = (Standard Deviation/Mean) * 100.

= (0.105409 / 1.7) * 100

= 6.20%

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.