Maurice Tutor

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Category > Computer Science Posted 19 Sep 2017 My Price 4.00

highway department

Highways: Reflective Paint The highway department is testing two types of reflecting paint for concrete bridge end pillars. The two kinds of paint are alike in every respect except that one is orange and the other is yellow.

The orange paint is applied to 12 bridges, and the yellow paint is applied to 12 bridges. After a period of 1 year, reflectometer readings were made on all these bridge end pillars. (A higher reading means better visibility.) For the orange paint, the mean reflectometer reading was  width=, with standard deviation s1= 2.1. For the yellow paint, the mean was  width=, with standard deviation s2= 2.0. Based on these data, can we concludethat the yellow paint has less visibility after 1 year? (Use a 1% level of significance.)

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Maurice Tutor
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Status NEW Posted 19 Sep 2017 10:09 AM My Price 4.00

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